Selling mounts is the only way a taxidermist has of getting rid of mounts that clients don't come back and get.(You would be suprised how much that happens) Most taxidermists work out of a shop at their home, and have no way of storing mounts after a few years. I know people who don't even hunt that have bought mounts hanging in their homes. After all, what's a fireplace worth without a good looking mount above it?
Generally you can tell from what you are hearing from a guy, if he really shot a mount or not.(I stood in front of a really nice 12 point mount one time, that the guy said he shot with his ".309" caliber rifle.) I don't own a really nice mount, but I keep hoping some day I can harvest a really trophy buck, but if it never happens, I will still enjoy the process.
But NO, I would not buy a mount, just to have something to brag about.