I made a pretty inexpensive primer counter for my Pro 2000 with the help of an electronics whiz. It has a micro-controller that was programed the way I wanted it.
http://www.thehighroad.org/showthrea...=round+counter
The Press Monitor products are pretty pricy, but if you don't mind that, they just may be what you are looking for.
Press Monitor
Carl's Electronic Kits sells this up/down micro-controller controlled kit ($23.00) that could be powered by an old phone power supply, and the counting input could be a strategically placed micro-switch similarly to what I did with the primer counter above. (you do need a soldering iron)
Up/Down Counter