How much are Ingram charging for it? They may well be beating Beachbody's own distributor rack rate (retail-25%)
Generally speaking, if you find Ingram's prices too high, you may be in the wrong niche, or at least at the wrong end of the niche. For general audience stuff, it's extremely hard to beat Ingram's prices -- they are the company from whom Barnes & Nobles and other major book retailers buy the bulk of their stock, and many retailers won't even consider shelving a title that isn't listed in the Ingram catalogue.
As I said in the other P90X thread, there are mountains of videos available on eBay, CraigsList etc. often new in the box or opened once. It's just a part of the workout video/equipment market -- people buy the stuff then never use it, then eventually sell it to make room for more workout stuff that they're really really going to use this time.