Amazon puts holiday promotions to vote

’Tis the season for holiday gimmicks, but this one from Amazon is kind of cool. For the next four weeks, it’s having customers vote among four different potential price-slashing deals, with the deal that gets the most votes each week actually becoming reality. You can watch a video about how the promotion works here. This week’s choices are an Xbox 360 core system for $100 (down from $300); a Mongoose mountain bike for $30 (down from $140; it’s pictured here, in case you’re not quite awake yet); an interactive Princess Genevieve Barbie doll for $10 (down from $50); and an Amazon Prime membership with a $100 gift certificate for Amazon toys (a $180 value all told) for $40.