I am looking to purchase a Python in need of help (4 bargain price, yeah, sure). I've seen decent ones on Gun Broker, Guns America & Gun Auction EXCEEDING $1k! A stainless unit, 6" barrel NIB was asking $2.5k!!
I would suggest you check these auction sites to see what the market WILL BEAR. Don't know how appraisers & sellers get their ideas for values, but so many Pythons R selling for premium dollar. I saw a rusted 4" in Florida with an 'starting' price of $680.
What U have, I'd say, is worth more than it's weight in gold.
Best of Luck.
Paul