I'd by the lot at 220 each. If any of them are sapphires I want nothing to do with them 6 months of mining and those fans are almost certainly almost dead. You're lucky if they last 3 months.
Bullshit. I have had Saphire Vaper-x 7950's running for 8 months and the fans are still kickin ass as I type this. I have 12 of them and not a single one has messed up. On the other hand I had a MSI that went to shit.
While results my vary the poster you responded to was correct, the sapphire fans are pretty weak, and failure of any fan is to be expected (especially these) if you look at the build quality of the fans. They are thin flimsy fans with cheap sleeve bearings, certainly not up to the task of 24/7 mining like we use them for. The fact your's are at least spinning also doesn't prove they are in good shape or functioning properly. I have many spinning fans on my sapphires that are on their last legs and in failure mode. Just be prepared when they fail in the worst possible time during a hot spell in the summer.