Back in 1995 I paid $1500 for a bridge. Imagine what that would cost today! And it was plenty at the time. I think it was 2007 that I got my last crown for $1800. Since then only extractions for $100 - 200.
Like all professionals, dentists have a lot of overhead to pay -- for rent, utilities, staff, and who knows what all to run an office.
However, if any of them can afford $50,000 + to travel to Zimbabwe to kill an animal to decorate their wall with, and can afford several of these creatures, then they are charging their customers too much, and not contributing enough to charity -- not to mention having very bad taste in wall decor.