I think you should be able to trade or sell as on ebay to any member in the game. If you buy a driver and want to spend your money to upgrade, then find yourself stuck with one that would be like "one mans junk is another mans jewel" you should be able to sell it to anyone for any asking price, you pay 700 credits,sell it for say 350. The buyer is happy, you offset the cost of your new driver, everyones happy.
Sounds like a no brainer but software for tracking is involved on the part of WGT so perhaps as with ebay a buyer/seller premium could offset there costs. It does not have to be full blown, just beta to start,and there should be a holding time like say 2 days to reverse the deal if your not happy with the results,and an understanding that after 2 days its yours,no refunds...jmho
BRAXAS