I have had to purchase two rings…the first one I didn’t get back..
The first I purchased at a chain store.very nice ring but after purchasing the second, realized yes there is a huge mark up on any of that stuff. I would recommend going somewhere, where they have loose diamonds, pick out one in your range and a setting. Then go to a second store and try and find one with the same qualities and compare prices. I have heard good things about Shane. I bought mine from a small dealer on 4th and 4th in mpls. don’t know if they are still there.