Best Buy offers the Vtech DECT 6.0 2-Handset Expandable Phone System, model no. CS6729-2, for $29.99. Opt for in-store pickup to avoid the $3.99 shipping fee. That's the lowest price we could find by $15. It features an answering system, speakerphone, 50 name-and-number phonebook directory, call screening, and expandability up to five handsets.