1) MMracingkarts.com in Michigan sell Bridgestone 6.0 sets for $163.37 plus shipping. This is the cheapest set price that I've found. And closest regarding shipping distance.
2) Acceleration karting set price is $164.99 but ships out of California.
3) Comet kart sales set price is $172.00 and ships out of Indiana.
If anyone found any cheaper PLEASE let us know.