Where do you all buy your exercise DVDs? I love to exercise at home using DVDs and used to use collagevideo.com. I like them because they have previews, so I can see if I like the music and the moves. But their prices seem a little high. I also look on eBay and Amazon. But I was wondering if there are any other good websites that you guys could recommend? I do mostly step aerobics, pilates and some strength training. I'd like to start getting into kickboxing and maybe something like Zumba - any thoughts?