Depends on the amount of prep work for those wheels. first off.. is that center cap metal or plastic. if it's plastic it can't be powder coated because you can't electrify plastic.. Second is that already a powder coated finish on there to start with? if so it's going t be rather easy to powder coat becaue you are able to powder coat on top of powder coating & would not have to blast the wheel.

Now, if that center cap is metal & the current finish on the wheels is not a powder coated finish. Were going to have to do a hell of a taping job because the blasting process is pretty intensse & we don't want to blast through the tape!!

Worst case $50 per wheel
Best case $25 per wheel