Fulfilment Cost Calculator: What Fulfilment Really Costs and When It Pays Off

→ Tips for using the 3PL cost calculator::

1. Orders per month: Use your average over the last three months, not your best month.
2. Items per order and parcel weight: These drive your pick costs and shipping. If a single item weighs more than 5 kg, the calculator adds weight surcharges.
3. Number of products (SKUs) and storage: From these, the calculator automatically picks the cheapest suitable software plan and works out your storage costs.
4. Return rate: In fashion, 30% and more isn’t unusual, while supplements and cosmetics usually sit well below that.

The last slider asks how much shipping gets on your nerves. It doesn’t change the costs, but it says a lot about your motivation. To be honest, for many sellers it’s the slider that ends up tipping the balance. All figures are a rough estimate based on our standard price list and typical market prices, so the calculator isn’t a binding quote. You’ll get your individual, exact price when you get in touch with us.
 
 

What makes up fulfilment costs?

Every fulfilment provider charges for essentially the same things, just split up and named differently. So when you compare fulfilment pricing, these items belong on your list:

How fulfilment costs work at Quivo:

At Quivo, the total price rests on three pillars: software (the Quivo Connector), fulfilment (storage, pick and pack, returns) and shipping at our bundled rates. These are our software plans:

Prices with annual billing (25% cheaper than monthly), excluding VAT, as of November 2026. A one-off onboarding fee of £85 applies on top.

If you’re comparing fulfilment centre pricing in the UK, check how storage is billed. We bill it weekly, so you pay for the stock that’s actually on the shelf, not your peak level for the month. You’ll find the overview on our prices page, all plan details under software subscriptions and every line item in the latest fulfilment price list. Our e-commerce fulfilment page shows how things run in the warehouse.

Shipping is usually the biggest cost

In three of the four example calculations further down, postage is the largest single cost block and accounts for around half of the fulfilment costs or more. Only in the returns-heavy fashion shop do storage, picking and returns weigh more. If you only compare providers on pick price, you’re often looking at the smaller part of the bill. What matters just as much is which shipping rates a provider gets across the combined volume of all its customers, and which surcharges the carriers add on top.
 

What does fulfilment cost per order? 4 example calculations

We ran four typical shops through the calculator. All figures are rounded, exclude VAT and assume shipping within the UK (Royal Mail Tracked 48 for parcels up to 2 kg), as of November 2026.

What these numbers show:

• Fulfilment stays stable per order. With Quivo, all four shops land between £7.00 and £8.02 per order, shipping included. In-house logistics cost around £1.50 to £2.20 more per parcel in every scenario.
• The time you spend grows with every order. Just 500 orders a month mean around 77 hours of work, roughly ten full working days. At 2,000 orders, it’s close to 1.8 full-time roles.
• Returns eat time. The same fashion shop with an 8% instead of a 40% return rate would need around 142 instead of 195 hours a month.
   

The hidden costs of shipping yourself

Shipping yourself looks cheap on your bank statement because the biggest costs never arrive as an invoice. These are the 7 costs missing from most calculations:

1. Your time

   Each order adds up: checking it, fetching the item from the shelf, packing, printing the label, taking the parcel to the Post Office and later answering the question of where it’s got to. For small volumes, our calculator assumes 5.5 to 8.5 minutes per order, plus 1 to 1.5 minutes for every additional item. That sounds like nothing. At 500 orders a month, it’s around 77 hours. And if you hire someone, an hour costs more than the wage on the payslip. The National Living Wage for workers aged 21 and over has been £12.71 an hour since 1 April 2026. Add employer’s National Insurance, pension contributions, holiday pay, sick days and a realistic wage for warehouse staff, and the calculator works with £22 to £28 per hour. If you pack yourself, those are hours you don’t have for marketing, buying and product development.

2. Postage without volume discounts

   Royal Mail’s online prices for small parcels are competitive: since 7 April 2026, Tracked 48 costs £3.65 for a small parcel up to 2 kg bought online. It gets more expensive as soon as your box no longer fits the small parcel format of 45 x 35 x 16 cm. A medium parcel up to 2 kg costs £5.55 with Tracked 48 and £6.55 with Tracked 24, and up to 10 kg it’s £7.35 and £8.55 (all prices incl. VAT). On top of that, you’re usually tied to one carrier, and next-day or signed-for services cost extra. A fulfilment provider works with several carriers and picks the best-value service for each parcel. For parcels up to 2 kg, the calculator uses Royal Mail’s own online Tracked 48 prices as the upper limit for doing it yourself: £3.04 to £4.63 excluding VAT for a small or medium parcel. For heavier parcels, it assumes 8 to 46% higher shipping costs than our bundled rates, depending on volume.

3. Storage space

   It starts with the living room, then the spare room, then the garage. As soon as you rent a commercial unit, storage becomes a fixed cost that runs every month, however much you sell. According to Knight Frank, prime headline rents for warehouses over 50,000 sq ft in West London reached £29.50 per sq ft a year in Q2 2026. Across the UK, prime rents for smaller mid-box and multi-let units averaged £15.80 per sq ft, according to Colliers. On top come business rates, racking, insurance, power and heating. The calculator works with £18 to £30 per pallet space per month.

4. Returns

   UK shoppers send a lot back. A Loop Returns benchmark covering 13.8 million returns from more than 4,000 Shopify merchants put the UK return rate at 17.5%, almost one order in five and close to double the US figure. 78% of UK returns ended in a refund rather than an exchange. Retail Economics and ZigZag forecast UK non-food online returns of £25.1bn for 2025. Every return means unpacking, checking, restocking and triggering a refund. In the calculator, that’s 8 to 12 minutes per return. How to handle returns professionally is covered in our article on fulfilment returns.

5. Shipping errors

   Wrong item, mixed-up size, forgotten insert: every mistake means paying postage twice, time in customer service and sometimes a bad review. If you pack on the side, there are no fixed checks. The calculator assumes 1 to 2% of shipments go wrong when you do it yourself, with follow-on costs of £12 to £18 each. For comparison: Quivo’s fulfilment accuracy is 99.6%.

6. Equipment and software

   Label printer, parcel scales, packing table, shelving, shipping software and a tool for returns labels. None of it costs much on its own, but together it adds up to a fixed base you pay every month. In the calculator, it ranges from £40 to £1,200 a month depending on volume.

7. Everything you can’t put a price on

• Holidays and illness: If you’re off, nothing ships. If someone covers for you, they need training first.
• Peak season: Black Friday and Christmas turn into a stress test every year. The key dates are in our Amazon Prime Days 2026 and peak season guide.
• Growth: It’s what you want, but at some point your time runs out. Then it’s employment contracts, training and payroll before a single extra parcel goes out.
• Headspace: Boxes in the living room, tape stuck to your fingers, and the day only ends when the last parcel is packed. That’s what the “nerves” slider in the calculator is for.
   
   

Fulfilment costs compared: fulfilment vs shipping yourself

• Orders that reach us by 1pm are handed to the carrier on the same working day. From our warehouse in Maidenhead near London, parcels usually reach customers within the UK in 1 to 2 working days, or the next day with an express service. More on our page about fulfilment in London. If you also sell into Europe, our EU fulfilment services let you spread stock across several of our 8 fulfilment centres.
   
   

When does fulfilment pay off?

There’s no fixed threshold. The most honest answer comes from a counter-calculation in which we make shipping yourself as cheap as possible: without a single pound for your working time. That leaves postage, storage, equipment and shipping errors.

Assumptions: 300 orders with 1.5 items, up to 2 kg, up to 20 SKUs, 4 pallets, 8% returns. 500 orders as in the example above. Hourly figure based on midpoints.
 
So if you value your time at zero, shipping yourself does save money in pure pounds: around £650 a month at 300 orders and around £1,250 at 500. Divide that saving by the hours you put in, though, and you’re paying yourself around £16 an hour. That’s a little above the National Living Wage of £12.71, but well below the £22 to £28 a member of staff would actually cost you, and every one of those hours is time you’re not spending on growing the business.

In our experience, a good point to switch is when you’re sending around 100 orders a month, your product has proven itself and you notice that further growth depends on your time.

Fulfilment pays off for you if ...

• you spend more than a day a week on packing, shipping and returns
• you’d soon need to hire someone to handle shipping
• returns regularly pile up
• every peak season turns into a slog
• you want to sell into the EU or on marketplaces such as Amazon, eBay or TikTok Shop
• your living room is slowly turning into a warehouse

Shipping yourself still makes sense if ...

• you’re still testing whether there’s demand for your product
• you only send a handful of orders a week
• every order is made or personalised individually

You can also do both: some of our customers have us handle only their bestsellers and keep shipping slow movers themselves.
 

Comparing 3PL pricing in the UK: 8 points to check

Comparing order fulfilment costs only means something if you run the same order through every provider. Look out for these points:

1. Total cost per order, not individual prices: A cheap pick price doesn’t help much if shipping is expensive.
2. How storage is billed: Weekly by actual stock, or monthly on a set date? With fluctuating stock, that makes a noticeable difference.
3. Minimum volumes and base fees: Some providers require a minimum monthly volume or charge a flat fee if you fall below it.
4. Carrier surcharges: Fuel, peak season and remote area surcharges (for example for the Scottish Highlands and islands) are often not in the base rate.
5. Returns costs: Is it charged per return, per item or both? Is inspection included?
6. One-off costs: Onboarding, setup and the first inbound delivery of your stock.
7. Contract length and notice period: How flexible are you if your volume changes?
8. Software and integrations: Can your shop connect directly? The Quivo Connector links up with over 40 shop and ERP systems.

The most reliable basis is a sample calculation with your real figures. Send us your numbers and we’ll come back within 24 hours with a personalised quote. You can find out how we work as a fulfilment provider on our overview page.
 

How to reduce your fulfilment costs

• Adjust your packaging: A few centimetres or grams can move your parcel into a cheaper band. With Royal Mail, a box that’s just 1 cm too big for the small parcel format already counts as a medium parcel. Which carrier suits what is covered in our guide to the 10 best delivery services in the UK, and you’ll find more ideas in our tips on reducing shipping costs for small businesses.
• Keep stock lean: Storage costs run every week. Stock that sits for months takes up space and ties up cash.
• Reduce returns: Good size guides, honest product photos and clear descriptions save returns and with them costs at every stage.
• More items per order: Every extra item only adds a small pick surcharge, while postage and the base price are charged once.
• Choose the right plan: At Quivo, the system fee per shipment drops from £0.50 to £0.25 to £0.17. As your volume grows, switching pays off. The calculator automatically picks the cheapest plan for your figures.
   

The bottom line: shipping yourself only looks cheaper

Shipping yourself is often only cheaper as long as you don’t count your own time. Once you factor in working time, storage space, postage and returns handling, fulfilment comes out around £1.50 to £2.20 per order below in-house logistics in our examples. And even if you value your time at zero, packing yourself pays you around £16 an hour, well below what a member of staff would cost, for something you probably won’t enjoy for long.

• Try the calculator above with your own numbers. And if you’d like an exact quote tailored to your business, just drop us a line!