2004 Dodge Durango back door won’t open

My back door won’t open. I have tried to unlock it, but that wasn’t the problem, it still won’t open. Have there been other that had this issue and if so about how much did you pay to get it open or repaired.

Do you mean the tailgate, rather than back passenger door?
Might be better if you post the estimates you have received, then people might comment.