I'm a Craigslist fan for this reason. Just have to know what items you want and have patience. Try to match the front 3 speakers if possible. If you're looking new there are plenty posts recently for all price ranges that could point you in a good direction.
I just got 5 Ascend's including the stands from craigslist and had been watching the listings for a while until this deal came up. So research what you want and keep looking til it comes up. Good Luck and if Dan is reading this Thanks.