After I got through 3 Losi fans in 2 months and a Much More not far after that I got my next replacements from the guy in this thread:
http://www.oople.com/forums/showthread.php?t=53764
I've had the ultra high flow on my xcelorin in my DB-01 for over a year without any problems at all. They seem expensive but I've saved loads compared to buying new ones all the time!
Even though he's in the US the postage over was cheap and quick too, also emails about progress were common and he was happy to answer all my queries too.
Hope that helps.