How much will it cost to remove two gold crowns and replace it with temporary crowns?

I have two gold crowns that need to be removed. I'm getting braces after they remove my gold teeth. So my question is how much will it cost to remove gold crowns and replace it with temporary crowns?? A dentist told me I will have to get temporary crowns until I'm done with my braces. Please give me a overall price of the gold crown removal with temporary crowns... I'm trying to see how much I should start saving to have this done. Thank you.