I have an adjustable mattress which makes it easy for me but I don't have a back problem like you have.

You're referring to ZERO GRAVITY chairs. Google and learn about the various ones available, even as chairs for patio, etc. I'm looking into getting a zero gravity recliner with lumbar support. Yes, they are available in various price ranges, some seriously expensive. I don't want heat or massage, just a quality zero gravity recliner, and will need lift since I have developed problems with legs, making raising myself from a sitting position very painful (and depending on the pain level of the day, getting up to a standing position is nearly impossible, an at times not possible at all).
I learned that Medicare will pay for the mechanism within such chairs but not for the cost of the chair itself. Medicare also pays for adjustable base for beds IF prescribed by your doctor. It's a process that can be a deterrence, but may be worth your while. Of course, all depends on the type of Medicare plan one has.