Sears offers the Panasonic DECT 6.0 Expandable Digital Cordless Phone System, model no. KX-TG4021N, for $24.99. Plus, Shop Your Way Max members receive free shipping. (Not a member? It's free to sign up for a 90-day trial; otherwise, shipping adds $6.50. In-store pickup is also available.) That's $2 under our March mention and the lowest total price we could find by $15. This phone system uses DECT 6.0 (1.9GHz) technology, which reduces interference with 2.4GHz devices, such as wireless networks. It also features a built-in digital answering machine, expandability to up to six handsets, and caller ID.