Can you change a permanent gold crown white ? How much would it cost ?

Gold crowns generally have excellent fit and longterm service, but are not very aesthetic. Newer materials now available for crowns are all ceramic, white and highly aesthetic. In order to have your crown made to look like a tooth, the good crown would need to be removed and replaced with an all ceramic crown. The cost for this treatment generly varies depending on the location of your dentist and his/her skill level.

Gold crowns are gold. You can't change the color. If you want a tooth colored crown you will need to remove the gold one first and have a new crown made. The cost varies depending on the dentist and the lab used.

The average price or a crown or the price of an average crown???  Different answer.  Front tooth?  Back tooth?  How pretty does it need to be.  Sort of like the question "How much does dinner cost?"Find a dentist you like for other reasons and let them fix your tooth. The price likely will not vary that much.   Don't pick you dentist or your brain surgeon by price.