I just bought 4 x 120mm "PC fans" from snizen99 - 3 of the 4 died within 12 hours and the 4th was dead when switched on. He refunded my payment but it still cost me to return the fans so I could get the refund. So I ended up out of pocket and don't have any fans.
There may be a reason his prices are cheap.
Thats bad luck on your behalf I never had issues with him and spent thousands nor has anyone else I ever came across, buying from a store you run the same risks, but pat more initially.