ok, so WGT touts itself as "the most realistic golf on the web"
if that's the case, the most expensive driver you sell is a $400 driver (IRL) for 1,695 credits. a dozen of your most expensive balls are $46 (IRL) but since WGT sells in 3's, that is about $12 a sleeve, IRL. So IRL, the nike balls are about 2.8% the cost of the R11 driver. In WGT-land, a dozen golf balls cost MORE than your most expensive driver.
if you really want to be "realistic" why don't you consider pricing your balls in line with your other equipment.