TigerDirect offers the ooma Telo Free Home Phone System, model no. 100-0201-100, for $99.99. This $15 mail-in rebate cuts it to $84.99. With around $4 for shipping, that's $11 under yesterday's mention and the lowest total price we've ever seen. (It's a current price low by $11.) The phone service offers unlimited calling to any number in the US via your broadband Internet connection and features caller ID, call-waiting, and more. Rebate expires December 3.
Note that the Ooma Telo requires high-speed Internet and a router (not included).