UK FBA Answer · Updated 2026

Should I use a UK FBA prep centre or self-prep at home?

Short answer

For most UK Amazon FBA sellers under 200 units/month, self-prep is cheaper. Above 200 units/month, a UK prep centre saves time and avoids errors at typically £0.50-£1.00 per unit. The cross-over point depends on your hourly rate vs prep cost — if your time is worth £30+/hour to your business, outsource at any volume above 50 units/week.

Prep — the work between buying a product and Amazon receiving it ready to sell — is the most boring part of UK FBA. It's also where new sellers waste the most time. The decision to self-prep vs use a UK prep centre comes down to your hourly rate and your error tolerance.

What "prep" actually means

For each unit before Amazon receives it: (a) FNSKU sticker labelling (the unique Amazon-generated barcode that identifies your specific stock), (b) poly-bag any item with loose parts or potential leak, (c) bubble-wrap fragile items, (d) suffocation warning labels on poly bags >5x7", (e) "made in" country-of-origin labels for many categories, (f) box up + label the inbound shipment to Amazon's carrier. Per unit that's 30-90 seconds. Per shipment of 30 units that's 30-60 minutes.

UK prep centre realistic costs

£0.50-£1.00 per unit covers labelling + poly-bagging + basic prep. Bubble-wrap, custom inserts, removal-order receiving, and customer-returns processing typically £0.50-£2.00 each on top. Storage between receipt and ship-out: £0.05-£0.20 per unit per week. Most UK prep centres charge a small monthly minimum (£20-£50) so very-low-volume sellers aren't worth their time. Specialist multi-channel preppers (Amazon + eBay + Shopify) tend to charge slightly more but offer flexibility.

Self-prep realistic time

After 100+ units of practice, expect 30 seconds per unit for standard arbitrage prep — sticker, poly bag if needed, sort by FNSKU, box. A 30-unit shipment: 15-25 minutes hands-on, plus printing labels and creating the shipment in Seller Central (another 15 mins). Times double for fragile items needing bubble-wrap, or for first-time SKUs you're still learning.

The break-even math

If your time is worth £20/hour to your business: self-prep until ~£1.50 per unit cost (you're saving £0.50-£1 per unit at £20/hour). Above £30/hour, outsource at £1/unit immediately — the time saved goes to higher-leverage work (sourcing, supplier relationships, scaling). The unspoken benefit: a good prep centre catches errors (wrong labels, missing FNSKU, hazmat misclassifications) before they reach Amazon — which alone often justifies the cost via avoided removals and account-health hits.

When to absolutely outsource

(1) You're scaling past 200 units/week — self-prep becomes the bottleneck. (2) You're running wholesale with bulk SKUs needing repacking — specialist prep is cheaper than your time. (3) You're sourcing from US/EU and importing — many prep centres handle inbound from freight forwarders. (4) You've had Amazon account-health hits from prep errors — outsource the SKU-handling process to professionals.

Choosing a UK prep centre

Things to ask: (a) per-unit price + any minimum spend, (b) average receive-to-Amazon turnaround (target: 24-72 hours), (c) hazmat handling (required for batteries/aerosols), (d) integration with Seller Central (do they generate inbound shipments for you?), (e) returns handling, (f) storage cost while waiting to ship. Avoid prep centres that don't publish prices upfront. Inner Circle has vetted partner prep centres — see /partners.