Hello Diane
Welcome to the community.
Have a look at another topic Home Lifts / Elevators. Some of the advice in that topic will apply to installing a stair chair lift, such as looking at other custormers for reference, who else can service the device, etc.
When we went looking at options for my mother, we looked at stair chair lifts, and the quotes we received were pretty much on a par with an elevator/lift. It all depends on how many corners there are, how high the lift has to go, etc.
Also, think about how long you can/want to continue to live in a home that requires a chair lift. Will it be a worthwhile investment for that number of years?
I hope that helps.
