These aren't used clubs, these are virtual clubs and thus can't be gifted.
You can trade them in, well not the ones that you start with, but the ones that you buy along the way for about 30% on the dollar, which is not unlike real golf. If you look at it from the WGT point of view you can see why they don't let you sell your used clubs, which work as well as the new ones, to other members.