Newegg has the SeaSonic SS-660XP² power supply for $134 -34 code "EMCWWVR42" -20MIR
This is an 80+ Platinum power supply with hybrid fan control (a toggle switch makes it work as a passive unit at low load) and modular cables. It is rated to provide 55 amperes on the +12 volt rail.http://www.seasonicusa.com/Platinum_Series_XP2.htm
I have one of these PSUs in my gaming PC. It has worked very well.
i7-6700K, NT06-Pro, GA-Z170N-Gaming5, 32 GiB, RX Vega56, SM951, 5TB HDD, Blu-ray, FTZ01, SX800-LTi, C32HG70, RK-9000BR, MX518