QUICK ANSWER
SellerAmp SAS for UK Amazon FBA sourcing, every time. SAS is the standard browser-extension deal validator — pulls Keepa data, calculates ROI, flags eligibility/IP/hazmat. FBA Wizard Pro positions as an all-in-one with a UK deal feed, but the feed quality is inconsistent and the standalone validator is weaker than SAS at the same price. Most UK OA operators run SAS + Source2Store for leads instead of FBA Wizard.
What each does
SellerAmp SAS — Chrome extension. Open any UK Amazon ASIN or supplier product page. SAS overlays ROI, BSR, fees, eligibility, IP risk, hazmat. Doesn't source deals — validates them. ~£15/month.
FBA Wizard Pro — Bundle of (a) deal feed for UK retailers (Tesco, Argos, B&M, Boots, etc.), (b) deal-scanner extension, and (c) profit calculator. ~£20-30/month.
Where SAS wins
- Validator depth. SAS is built specifically as the validation step. The data layer is denser per ASIN — IP claim history, monthly sold, BSR drops, FBA/FBM split, all in one glance.
- Standard in the UK OA ecosystem. Source2Store, Invenno, OAGenius, and most UK OA Discord communities hand you ASINs assuming you'll validate in SAS. Knowing SAS = knowing the workflow.
- Speed. 8-12 seconds per ASIN in expert hands. FBA Wizard's overlay is slower and laggier.
- Better Keepa integration. SAS shows you the relevant Keepa slice without making you click into Keepa. FBA Wizard makes you context-switch.
Where FBA Wizard claims to win
- Built-in UK deal feed. The pitch: SAS only validates, FBA Wizard sources too. In practice the deal feed quality is inconsistent — many feeds duplicate what's already on UK retailer hot-deals pages, and the conversion rate of feed deals to actual profitable replens is below the published rate.
- One subscription not two. Theoretically £25/mo all-in vs SAS (£15) + Source2Store (~£40-65) = £55-80. But this only holds if you use FBA Wizard's feed exclusively.
- Beginner-friendly. The UI guides newcomers more than SAS does.
The deal-feed reality
FBA Wizard's value prop hinges on its deal feed being usable. In practice for UK FBA in 2026:
- Most "deals" are ones already widely circulated — saturated buy boxes within 24-48 hours of feed publication.
- Feed accuracy on stock availability lags by 2-6 hours, so a high proportion of "live" deals are already out of stock when you click through.
- The feed is undifferentiated from what UK OA Discord channels (free) post in real-time.
If the feed isn't carrying weight, you're paying ~£25/mo for a worse SAS.
Comparison table
| Feature | SellerAmp SAS | FBA Wizard Pro |
|---|---|---|
| Validator strength | Best-in-class | Adequate |
| Deal sourcing feed | No | Built-in (variable quality) |
| UK ecosystem standard | Yes | No |
| Monthly cost | ~£15 | ~£20-30 |
| Best paired with | Keepa + Source2Store | Standalone |
The verdict
For ~98% of UK FBA OA sellers: SellerAmp SAS + Keepa + free UK OA Discord communities for sourcing. If you want a paid lead service, add Source2Store. Total stack: ~£40-65/month.
FBA Wizard Pro fits a small niche — total beginners who want one tool that does everything badly rather than two tools that each do their job well. For a real operation, it's not the answer.
FAQ
Is FBA Wizard Pro worth it for UK Amazon sellers?
Marginal. The deal feed quality has degraded as UK OA participation has grown. Most £5K+/month UK OA sellers run SAS + a separate lead source (Source2Store, OAGenius, or free Discord channels) instead.
Does SellerAmp SAS find deals for me?
No — SAS is a validator, not a sourcer. You bring the ASIN or supplier link; SAS evaluates it. For deal sourcing you'll pair SAS with Keepa Product Finder, Source2Store leads, or community Discords.
Which is better for UK Online Arbitrage in 2026?
SellerAmp SAS by a clear margin. The validator is best-in-class, the UK community ecosystem assumes you're using it, and pairing it with a separate sourcing tool gives more flexibility than FBA Wizard's bundled approach.
How much does SellerAmp SAS cost in the UK?
Around £15/month or £135/year as of 2026. Cheaper than FBA Wizard Pro and significantly cheaper than BuyBotPro at the validator job.
Can I do UK OA without any paid tool?
Technically — you can read Keepa free charts and validate manually. Realistically, you'll lose 70%+ of your time to manual checks. SAS at £15/month pays for itself in 4-6 hours of saved validation time.
What pairs best with SellerAmp?
Keepa Premium underneath (data layer), Source2Store or Invenno for paid lead feeds, SellerBoard or InventoryLab for profit tracking, GETIDA for reimbursements. All-in stack for a £10K-£50K UK FBA seller is roughly £80-120/month.
Educational content from a live UK Amazon FBA operator. Not financial, legal, or tax advice — talk to a qualified UK accountant for your specifics. Tool features and prices change; check the vendor's site before subscribing.
Related from the Method FBA blog: Keepa for UK FBA — chart-reading tutorial · A2A arbitrage UK · £5K Amazon FBA UK playbook · All recommended tools.