Challenge: Cheapest cordless phone with headset jack
I recently picked up a SIP device, but don't have a phone to use to play with it. A trip to Goodwill might work, but I want to cover all bases. If I can get things working as I want, I also want to use this for work purposes (I telecommute) so I would like to be able to use a headset. Caller ID is nice, but not needed. Answering machine totally unnecessary, I would rather NOT have one. Wireless frequency doesn't much matter, staying away from the 2.4 would be nice. Extra handsets totally unnecessary. What's the absolute cheapest cordless phone out there?