Newegg offers the Panasonic Link2Cell 4-Handset Bluetooth Phone System, model no. KX-TGE274S, for $79.99 with free shipping. (Amazon charges the same.) That's tied with our mention from Black Friday weekend and the lowest total price we could find by $12. This phone can link up to two cell phones via Bluetooth. It features a text-to-speech function and audible caller ID.
Note: If you haven't yet, use coupon code "MBLMASTER15" and pay via MasterPass using Newegg's mobile site to cut it further to $64.99. (This discount can only be used once per account.)
Don't mind a refurb? BuyDig offers a refurbished unit for $59.99 with free shipping.