My dad used to be a GM at a Yamaha dealership. I got mine for like $1,800. All my friends got theirs for $1,950-2,150.
I think the MSRP on the Zuma is like $2,200 now. With tax & license at a reputable dealer, you should be able to get one for $2,500 out the door.
My insurance is $75/yr. In Utah you must register them, but you do not have to have a motorcycle license.