Three Monkeys

A man walked into a pet store looking to buy a monkey. The pet store owner pointed to three identical looking monkeys in politically correct cages.
"The one on the left costs $500" says the store owner. "Why so much?" asks the customer. "Because it can program in C" answers the owner.
The customer inquires about the second monkey. "Oh that one is $1500. It knows Visual C++ and Object-Rational technology.
The startled man then asks about the third monkey. "That one costs $3000" answers the owner. "3000 dollars, says the man. "What can that one do"?
To which the owner replied "To be honest, I've never seen him do a single thing in all the time he has been here, but he claims to be a government worker.