newegg offers the Kingwin 850-watt Lazer Platinum Series ATX Power Supply, model no. LZP-850, for $109.99 via the directions below. With free shipping, that's the lowest total price we could find by $76. This 80 PLUS Platinum-certified power supply features a 140mm fan, five PCI-Express connectors, 12 Serial ATA connectors, and more. Deal ends March 31. To get this deal:
  1. View the Kingwin 850-watt Lazer Platinum Series ATX Power Supply for $189.99
  2. apply coupon code "CLRNCMDNS36" to cut it to $149.99
  3. redeem this $40 mail-in rebate for a net price of $109.99