Updated on 2/13/2017. Costco offers $65 off on this item, dropping the price to $94.99. The price is valid from February 16, 2017 through March 12, 2017. Costco February’s Coupon Book. Price: $94.99 after $65 off. Model: WF-3640 Costco Item# 899496 valid through 1/31/2016. With $65 instant rebate, Costco offers $94.99 on Epson WorkForce WF-3640 All-in-One Color Inkjet Printer, […]