I buy from Play It again and Perform Better as well as several other catalog companies and eBay, Craigslist, etc. just like everyone mentioned above. Here’s another trick of the trade if you’re a trainer. Many independent equipment stores (not Big 5 or Sports Authority which typically don’t sell the equipment I want anyway, I’m talking an independent gym equipment store)will provide a discount to you as a trainer, just ask. There are several equipment stores in my area of California and because they sell commercial gym equipment, they always stock BOSU. I get 10% discount right off the top of all of my purchases. If that doesn’t work. Go to Ideafit World Conference! You’ll find the biggest selection of vendors IDEAfit’s World conference. Since I go to the conference every year, if there is product that I know I can’t find on eBay, Craigslist or Play It Again, and want a bigger discount, I wait for Ideafit and stock up while at the conference. Vendors offer amazing deals and many, free shipping. The first year, I didn’t know this, but the second, I was sure to save for it. BOSU has always offered a reasonable discount and good package deals if you buy more than one or some of their videos, etc. Props to Ideafit, cause this marketplace is the best I’ve seen in this industry.