I did, not from them. i spent $10 more to get one through ebay/paypal, came in perfect condition, not a single scratch on it.
anyways, i currently overclocked it, I changed the blck to 160 from whatever the default was and the multiplier to 23, its currently at 3.8ghz, and i was wondering if it should always idle at that? its used to idle at like 2ghz and max at 2.8 stock, now its just 3.8 always. should I change anything else? i didnt touch any voltages