Wheelchair for Tie Dye Ron

My wheelchair has been broken for awhile but yesterday it finally died. It will no longer propell my large ass to the shower room or the lunch room or most importantly outside. I have located one rated for a person my size in my area. It is a $21,000 chair rated for a 700 pound person and has zero miles on it. She is willing to sell it for $2000.  Looking for a little help.