Project Contact via eBay offers the refurbished Ooma Telo VoIP Home Phone Service Box, model no. 100-0215-251, for $79.95 with free shipping. That's $15 under the best price we could find for a similar refurbished Ooma Telo VoIP box. It supports corded or cordless phones or up to four Ooma Telo handsets and allows for unlimited calling to any U.S. number.
Of note, no warranty information is provided.