QUICK ANSWER
SellerAmp SAS wins for daily UK OA sourcing speed at ~£15/month. BuyBotPro wins for thoroughness and rookie protection at ~£40-60/month thanks to its automated due-diligence checklist (IP risk, hazmat, gating, breakeven). Most established UK OA sellers run SAS exclusively because once you internalise the due-diligence checks, BBP's overhead becomes friction. New OA sellers should start with BBP for 60-90 days as training wheels, then graduate to SAS.
What each does
SellerAmp SAS is a Chrome extension that overlays an Amazon ASIN with the data you need to make a buy decision: ROI calc, BSR, FBA fees, eligibility, IP claims history, hazmat flag, monthly sold estimate. It pulls Keepa data and adds a sourcing-specific UX layer. ~£15/month or ~£135/year (UK pricing varies — check on signup).
BuyBotPro is a heavier "decision-engine" extension. Same data as SAS, plus an automated 21-point due-diligence checklist that flags risks, calculates breakeven cashback, runs a sales velocity score, and only gives you a green light when every check passes. ~£40-60/month for the full UK plan.
Where SAS wins
- Speed. Once you know what you're doing, SAS is ~3× faster per ASIN. Open product, glance at ROI/BSR/eligibility, decision in 8-12 seconds. BBP makes you wait for the full checklist to populate (~15-25 seconds per item).
- Lower cost. ~£15/mo vs £40-60/mo. At scale (you'll be checking 200+ ASINs/day), the £25-45/month delta funds another data tool — Keepa, Source2Store, whatever.
- Cleaner UI. Numbers-forward. No prescriptive "you should buy this" verdict — you decide.
- Standard in UK OA communities. Most successful UK OA replenishers run SAS. The DMA Discord workflow assumes SAS. Knowing SAS = knowing the language.
Where BuyBotPro wins
- Rookie protection. The 21-point checklist catches things a beginner will miss for the first ~3 months: hazmat, melt-risk, gated brands, IP-claim history, SKU-level competition saturation, breakeven-after-cashback. SAS shows the data; BBP interprets it.
- Cashback handling. Built-in TopCashback / Quidco / Imutual integration with breakeven calc adjusted for cashback. SAS makes you mental-math this.
- Auto-buy queue. If you operate a multi-VA buy team, BBP's queue + approval flow has structure SAS doesn't. Most UK OA solo operators don't need this.
- Sales velocity scoring. BBP's "sales rate" estimate is more conservative than Keepa's monthly-sold figure, which prevents over-buying on slow movers.
Comparison table
| Feature | SellerAmp SAS | BuyBotPro |
|---|---|---|
| Time per ASIN | 8-12 sec | 15-25 sec |
| ROI calc | Yes | Yes |
| Eligibility / IP / hazmat | Flagged | Auto-checklist |
| Cashback breakeven | Manual | Built-in |
| Sales velocity score | Keepa monthly-sold | Proprietary score |
| UK monthly cost | ~£15 | ~£40-60 |
| Best for | Established OA | First 90 days |
The honest workflow split
I started on BuyBotPro for ~3 months as a beginner. The checklist taught me what to check. After that, I moved to SAS exclusively because every BBP check had become a 2-second visual scan in my head, and the speed advantage compounded across the day.
Most UK OA operators I know on the £20K-£80K/month range run SAS only. The handful running BBP at scale tend to be running buy teams where the checklist enforces consistency across multiple operators.
The verdict
If you're under 90 days in UK OA: BuyBotPro. The £30-45/month premium is cheap insurance against the rookie buys that lose £200 in margin in week one.
If you're past 90 days and confident with the checks: SellerAmp SAS. Faster, cheaper, cleaner. Pair it with Keepa and you have the standard UK OA stack.
Both pair with Keepa as the underlying data source.
FAQ
Is SellerAmp SAS available in the UK?
Yes. SAS is built primarily for UK and US Amazon FBA sellers, with full amazon.co.uk coverage. UK pricing is around £15/month or £135/year as of 2026.
Does BuyBotPro work on amazon.co.uk?
Yes. BuyBotPro has full UK marketplace coverage including UK-specific eligibility, hazmat rules, and IP-claim history. The UK plan is roughly £40-60/month.
Which is better for online arbitrage in 2026?
For established sellers, SAS — speed and lower cost win at scale. For beginners under 90 days, BuyBotPro — the automated due-diligence checklist prevents rookie mistakes. After 3-6 months on BBP, most sellers downgrade to SAS.
Can I use SAS without Keepa?
Technically yes, but you shouldn't. SAS pulls Keepa data under the hood for BSR and price history. Without a Keepa Premium subscription, SAS data quality degrades on lower-traffic ASINs. Run both — total cost ~£30/month.
Does BuyBotPro replace Keepa?
No. BuyBotPro consumes Keepa data the same way SAS does. You still need Keepa Premium underneath.
What's the cheapest viable UK OA tool stack?
Keepa Premium (~£16/mo) + SAS (~£15/mo) = ~£31/month. That's the minimum serious UK OA stack. Add cashback (TopCashback/Quidco — free) and a profit tracker (SellerBoard — ~£15/mo) and you're at ~£46/month all in.
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.