Check these out right hereControl your caller ID and it only costs $9??As a matter of fact,the whole catalog has all sorts of fun stuff,although i reckon the sale of some items to civilians may be prohibited.
It seems like that caller id device is a service. My guess is you call some number which then calls out how you want it displayed. I'm making that assumption based on this at the bottom of the page you linked to:Each Caller-ID Controller provides 60 minutes of total usage time. (International calls may have a higher rate, thereby reducing the minutes provided.)--Tweaked your connection? | Mail Parse | Speed Converter
Ahhh i didnt read that far into it....So really its alot more than $9!!
Why don't you find out .We will wait around the corner.