I've spent: $30 on beach cruiser, $150 on the kit, $35 for speed carb upgrade, and $20 on a double kickstand and $20 for a tensioner with four bolts.
Totaling out to: $255 for my first motorized bike. If you have the patience you can make a really good motor-bike for $1000.
P.S. need a smiley with the Cuban flag.