I picked up this GSXR-750 for $3000 last year with 11K miles. Gave it to my wife for valentines day. She had never rode a bike before. She took the class after I gave it to her and so far she is doing really well. We are taking it really slow though.
They are easy to balance, no torque like a sportster, and they stop easy. I figured it was a good bike to learn on.