It's 22k on the market... You just bought a 512 item which is less than 20k for 18k. So how about 19.5K?
Wait... You offer 18k on an item that has a maximum value of 20k . And on an item that can sell up to more than 30k you're offering only 15k? Raise it to 19k and we have a deal.
Ok I see, sorry. We could meet in the middle yet again at 18k. What do you say? Easy 4k tbh