Most economy model stairlifts are around $3,000 including installation. Different parts of the country have varying degrees of competitiveness and therefore you may pay a little more or a little less. Heavy duty, outdoor, and custom curved lifts are more, of course. Sometimes you can find deals on refurbished stair lifts from the dealer. To give you a ballpark, we might sell a 2 year old refurbished stair lift, including installation, with a warranty, for about $2,000.