With ads set to launch on Prime Video at the end of this month, reports of cost per thousand impressions (CPMs) in the mid-to-low $30 range suggest Amazon is set to crush the competition. Netflix debuted its ad-supported tier with CPMs of $65 in late 2022, while HBO Max is reported to offer CPMs anywhere between $33 and $53. This is a classic case of Amazon arriving late to the party and wiping out an existing market with aggressively low pricing. Advertisers will suddenly have cheap access to all Prime Video inventory across select markets in North America and Europe, including heavy-hitting classics like Jurassic Park, Interstellar, and Trainspotting. There are also reports that ad loads could be as low…