That's just part of the story...
Tell us how much timber, workmanship (labour), other expenses (electricity, rent etc) did cost to the seller. Then they are in to make money so add the profit.
I believe it's a free market....there are no rules.
What the fuck happened with Okiya?! I take a break from interwebs and dude suddenly is a gay activist??!!!..... Enjoy that cash man, but pray your kids won't be pushed by peer to that side. You will die a bitter old man.