Re: New to this all! A few questions though
Welcome rugbyguy, glad to have another Tucsonan on the forum.
1) I am not familiar with your bike maybe this will help...
Most 24" or 26" bicycle with diamond frame and horizontal top tube should have sufficient space to mount motor.
At least 12.5 inches running along the seat tube from the top of the bottom bracket to the bottom of the top tube.Tubing size from 1-1.5inches on the both the seat and down tube. Plus or minus 70deg. above the bottom bracket between the down tube and the seat tube. Inner distance between pedals needs to be greater than 4.5 inches in width to clear the 4.5inch wide motor. Check the attachment for pic.
Now if your frame does not meet these dimensions not to worry there is other options like a rear mount set-up.
2) $150 is just fine.