This is an awesome deal for a great psu.
4 40amp +12v rails for $55? Are you for serious? (750W peak).
I've installed a good 40 antec supplies from earthwatts, eco neos, high current gamers and I don't have a single report of even 1 failing. I'm sure they do but failure rate seems pretty low.
As for antec rebates they are great. Usually get the approval email in about a week and the rebate in about 6 weeks.
Great rebate Companies:
Patriot Memory (4myrebate.com): 6 Weeks
Tiger Direct (4myrebate): 3 weeks
Rain-X (in house): 3 weeks
BAD BAD MAIL IN REBATE COMPANIES:
Biostar USA (motherboards) - 21 weeks
Xigmatek 26 weeks, 14 emails, 2 phone calls (finally received)
NZXT 21 weeks, 4 phone calls.