I have got a dental implant and am delighted with it although it was expensive. I was supposed to have two, one each side but one failed because I didn't have sufficient bone density and also had a longstanding infection sitting in my sinus. My husband had four, also very pleased, his bone density was better than mine but he was one of those unfortunate people who just has poor teeth.
Like you, I could not deal with dentures.
Price varies but its never cheap. Talk to the person who will do them about a price and what you will get for it, also what happens if the implant process fails and its not your fault, mine gives a free second attempt.
I couldn't say that the process is pleasant, you really have to trust the dentist and be prepared to spend quite a while in the chair.
Any more questions please ask