I find cheap ads all the time on Craigslist. Usually its fish tanks (I picked up a 55 gallon tank with a stand filter and 50 pounds of crushed coral for $50. Then sold the crushed coral for $20 lol). I picked up my BP for $80 (normal price around here), but she came with a tank, large water bowl, lamp and rocks. I've also seen Nic Boas for as low as $40 and a guy giving away his young RTB. Usually the best deals are from people moving.