The other way to save money without sacrificing quality is go to your local dental school. You are seen by students, but all of their work is triple checked by dentists, so you can be assured of quality care.
I do agree with lynn however, avoid the dental mills. All they do is have premade dentures which will never fit correctly. Find a small practice will only 1-2 dentists, they will offer you the best service.
most dentist accept payment plans or care credit. call around and explain your situation. call social service if you are low income. if you are having such a hard time dentures may be appropriate. try to avoid dental mills that advertise really cheap rates. everyone that i know that have tried these places have ended up in worse shape than when they went in. try local dentists that have an established practice. friends, family, and even customers will be able to recommend their dentists. dont give up hope! your family needs you!