My aunt has MS. It cost her nearly $10k to have a _used_ aluminum ramp installed for her house.
She can't come to my house because the gap between the buildings that leads to my door is too narrow for a wheelchair and would require is to get two different building owners, who are not our landlord, to agree to have their building modified to make room for it. It would easily cost 50k+ to actually rebuild two buildings and the sidewalk into a functioning ramp that is the correct slope for a chair.