"I was quoted a price of over $100.00 each. I decided that modern made quality scopes probably negate any need for backup sights."
I recently had a rifle that was not drilled and tapped for a scope done. Four hole at $20 a hole and because I had several rifles builds by this gunsmith that price came with a discount. Normal price is $25 a hole. If you were quoted $100 each and and that was sights and labor, you got a bargain. FWIW, my gunsmith is not cheap but he's very very good.
Paul B.