At 78 I wouldn’t bother as you said you could croak it tomorrow I had all my teeth out then Covid arrived so I lived with no teeth for two years the plan was to have implants in the end I had the same thought as you as I’m in my 70s instead I had dentures cost me 20,000 baht if im
honest I don’t wear that much even when I go out it’s what you feel comfortable with implants are not cheap in Thailand ! The dentures I had made do not have an upper pallet as I have a gag issue or did have but had a course of acupuncture and no more gagging so my upper denture is the same as the lower I use a denture glue/ sealer and they stay in for a good 12 hours my dentist suggested it on the provision if I couldn’t keep the top in I could have four upper rods that would keep them in I think the cost quoted just for the uppers was around 140,000 baht