This is a new rule

Scaleable Auction Prices
As part of more players joining your club every season, we’ve made small tweaks to how players can be sold. Adjusting the price to the player’s quality will increase the chances of selling them.
from here
https://forum.topeleven.com/top-elev...h-january.html

for the realism of the game, bot buyers will buy easier with lower prices
lol