I do make rings from customer’s coins. The price for silver dollars is $195 for a standard patina + $75 for two tone gold and + $75 for a flush set birthstone.
The Peace dollar makes for a pretty good ring. They do have a relatively light mint on the date that makes it a little difficult to see and they can be tricky in forming. They are big coins so are better for big rings. What size would you want?
One thing to consider is the chance of the coin/ring breaking during the process. There is always a chance of this happening. Sometimes there are flaws in the coin that can not be seen until it is to late. I would refund you of course and return the metal or I can make another and return the metal of the first one.