Three budget Bluetooth speakers are still discounted days after October Prime Day ended, and one price tag is quietly better than it claims to be.
Amazon still has Anker's Soundcore Select 4 Go at $21.99, down from $34.99; the listing says 31% off, but the real cut is closer to 37%. The IP67 rated speaker floats, plays 20 hours per charge, and pairs wirelessly with a second unit for stereo sound. Sony's SRS-XB100 is down to $43 from $64.99, an accurate 34% off, with 16 hours of battery life and the same dustproof, waterproof rating. RadioShack's retro AM/FM Bluetooth radio is $34.99, 8% off its $37.99 list price, which also checks out.
That's not just a rounding error. It means the deal shoppers might skip over, since 31% sounds modest next to Sony's 34%, is actually the biggest percentage cut of the three. Retailers' sale badges run on whatever the marketing team typed in, not a live calculator, and this round shows mistakes can undersell a deal as easily as oversell one.
RadioShack's radio is only 8% off, but nobody buying a Bluetooth speaker with a retractable antenna and 'RadioShack' printed on the front is doing it for the math.