What should be the cost of pulling 21 teeth and installing dentures?

My wife has trouble with her teeth and does not have a good bite as it were. She has had poor history with regards to crowns, 4 of them having to be pulled shortly after installation. She has two teeth that have recently chipped. The dentist says we need to get dentures either with implants or without to support them. She has 21 teeth and one dentist says to install crowns and partials. But he is not realizing that crowns don't work on my wife. So we have a situation that crowns don't work on. What price have you seen for removal of 21 teeth and installation of upper and lower dentures?