I use a Corsair purchased from Buy.com. But there are those who want the PCP&C brand and for them the prices at both Newegg and ZZF are ,as stated earlier, outrageous. The ZZF rebate needs to be postmarked within 20 days of purchase.
Get the 3 day shipping and you should be good. Good prices on the TX750 also. The TX750 is OEMed from CWT (Channel Well Technology) and it is a good PSU, but I would rather have a Seasonic built PSU.