3M Perfect-It 21mm Polisher

The 3M Perfect-It Random Orbital Polisher 21mm 34105E became an interesting September online flip after Amazon temporarily dropped the exact model to just £172.45.

The supplied Keepa data confirms Amazon and the Buy Box hit £172.45 on 9 September 2026, representing a substantial discount against the product's wider retail value.

The key distinction is the model. 3M 34105E is the 21mm UK Plug G version, while the similar 34104E uses a 15mm orbit. This matters because the eBay sold comparison initially identified by HOR was for the cheaper 15mm model and therefore should not be used as resale evidence for the 21mm Amazon deal.

Instead, the opportunity was supported by retailer pricing for the exact 21mm model. Spray Guns Direct listed the 34105E at £447.67 including VAT, substantially above Amazon's £172.45 drop price.

This was therefore not a proven quick flip. It was a slower opportunity based on buying a professional 3M tool far below its wider retail value and waiting for the right buyer.

Breaking Down the Flip

Amazon dropped the exact 3M 34105E 21mm polisher to £172.45, as confirmed by the supplied Keepa history.

The 21mm 34105E should not be confused with the cheaper 15mm 34104E, which had separate eBay resale evidence.

A specialist UK retailer listed the exact 21mm 34105E model at £400+ including VAT, £275.22 above the Amazon drop price.

With no confirmed 21mm eBay sold comp available, HOR treated this as a slow seller whose opportunity came from its wider retail value rather than proven resale.

Timeline: Amazon Drop to Retail Value Gap

Amazon Price Falls Below £200

08/09/2026

The supplied Keepa history shows Amazon's price falling sharply below £200, opening a substantial gap against the 21mm model's wider retail pricing.

Amazon Hits £172.45

09/09/2026

Keepa recorded both Amazon and the Buy Box at exactly £172.45, establishing the confirmed purchase price for the opportunity.

HOR Highlights the Deal

10/09/2026

HOR highlighted the discounted Amazon listing, with the important clarification that the product was the 21mm 34105E model rather than the 15mm 34104E.

Wider Retail Value Confirmed

10/09/2026

The exact 21mm 34105E model was available from another specialist retailer at £400 including VAT, supporting the size of the Amazon pricing discrepancy.

Useful Links / Resources

▶️ Amazon Listing

▶️ 21mm Retail Comparison

▶️ eBay Sold Listing

Final Thoughts

The strength of this opportunity was not a proven £400+ eBay sale. It was the unusually large gap between Amazon's £172.45 drop price and the exact 21mm model's wider retail value.

At the time of comparison, another specialist retailer listed the 34105E at £400+ including VAT, a difference of £227.55 from the Amazon buy price. That does not guarantee a £275 profit, but it demonstrates how aggressively Amazon had discounted the product.

The main drawback was liquidity. Without a confirmed eBay sold comp for the exact 21mm version, buyers could not assume an immediate exit at £400 or more. This was better viewed as a slow seller for members willing to wait for the right buyer.

At £172.45, however, the entry price was less than half the comparable £400+ specialist retail price. For patient sellers comfortable holding a professional tool rather than chasing a quick flip, that pricing gap was what made the opportunity worth considering.