I have a gas stove by Andes Range & Furance Co. with serial # and need imformation on year and cost of this stove . It is in working order and very nice condition.

Go here: Andes Range And Furnace Corporation - Pennsylvania Company Profile (People Search and Company Search) (http://www.bizapedia.com/pa/ANDES-RANGE-AND-FURNACE-CORPORATION.html)
How would we know? You didn't even give us a model number. You need to contact the manufacturer in Pennsylvania.