Purse problem
There are women who will buy a $15,000 "designer" purse when a $15 knockoff will do the same job. If I saw two women walking down the street, one with the $15,000 purse and one with a cheap one, I would not be able to tell the difference. But some people can. And it is those people that the $15,000 purse buyer wants to impress. She spends the stupid amount of money to advance her ego and status. How much ego and status will your photograph help the buyer advance when the buyer places it on a wall in their home? Now, a very expensive purse is probably hand-sewn out of fine leather and well made. But that accounts for only a small part of the crazy selling price. Your photos, it seems, are hand made and finely crafted out of first class goods. So they are worth something. How much? You have to take a look at what things are selling for in your community, in your gallery, and guess. Pricing is an art, not a science.
PS-- lots of guys spend too much money on dumb stuff, too. I am not picking on the ladies.