Here ya go.
http://www.clickykeyboards.com/index.cfm/fa/items.main/parentcat/11298/subcatid/0/id/124184
I personally have 2 of these for my IBM Ms, and they both work flawlessly.

This is why, in my contracts, I include 3 change requests. They can request 3 _specific_ changes to the design, and this is included in the quote. However, all other changes are billed out at an agreed upon hourly fee.

Couldn't you cut that figure in half? Since a phone call must be at LEAST a 2 party call? So me calling you for 30 mins would just be 1 recording covering 60 minutes between us, not 30 minutes each. So each person spending 900 minutes per month HAS to be talking to another person on Earth.