Lift
I have seen a few threads on this subject and thought I might finally offer up a suggestion.
(Mind you this only works if you can supply mains type water pressure.) My brother had a water lift on a house he bought and though it was old it worked great. He had an older couple living down the street living in a high set house and they were looking like having to sell because they were finding it too hard to climb the steps. He dismantled his lift and installed it for them. He said it is very easy to do.
If you could find one it might be a cheaper and easier solution.
Terry