I have approximately 2000 of these units available
The Net Caller ID device is a Caller ID / Call Waiting ID unit
that also has a serial cable to connect it to your PC, these
units come with windows software to allow you to have your incoming
calls announced, and logged.  Alot of Linux users have experimented 
with these devices as well, there are several perl scripts available 
for logging the data from these devices to your Linux machine.

Anyways, I am selling these units for $11.95 each, until the supply 
is exhausted.

http://www.dfwmetrotechs.com