I got an upper front incisor that was a failed crown with a cracked root replaced with an implant 3 years ago.
Only options I had was a plate, a bridge that might not work well, or an implant.
The process took around 7 months to complete, removal of old root, small amount of bone graft, fitting of titanium implant root, fitting of tooth to implant.
During this period I had a plate to wear, which wasn't as bad as I expected but not ideal.
The 3 years since the process was completed have been trouble free, the implant is rock solid, and eating things like apples, baguettes, etc is once again an easy process, which it wasn't with the plate.
Pain was negligible, no worse than any other dental procedure.
Cost was £2000, dentist had an interest free finance scheme available so I was able to spread it out over a year.
Was it worth it? I think yes. Had it been a tooth other than a front incisor though, I doubt if I would have got an implant.