I have a chair lift. My house is a split level.. from the door my main floor is 9 steps up.. wow.. those last three are Hard !
I contacted a local dealer.. The chair lift was used a little bit in one home then not needed. The owner sold this as a pre-used, but honeslty.. it looked brand new ! The dealer installed the new rail ( length was differant). but motor, chair ect was in new shape.
So, there are companies but be sure to research all options.
6 years plus.. I used it as I need it.. My worst days. not my best days.. but what a way to lift the laundry up along the stairs and groceries too !
Good luck !
Ell