DailySale offers the open-box VTech DECT 6.0 3-Handset Cordless Landline Telephone, model no. CS66293, for $45. Coupon code "DN7OFF" cuts it to $38. With free shipping, that's the lowest total price we could find by $19, outside of the mention below. It features caller ID, call waiting, digital answering, and speakerphone. Note that the countdown timer on the product page does not reflect an actual expiration time and resets daily.
A close price: IBuyOfficeSupply via eBay offers it for $39.19 with free shipping.