System Auction Shop, I'll sell out across all realms!

Lin Tian transmigrated to a cultivation world and spent two years as a good-for-nothing in the Qingyun Sect. When he was kicked out, he couldn't even scrape together a single spirit stone.
Just when he thought he was going to starve to death in the wilderness, the All-Heavens Auction System awakened.
A hundredfold return—sell a broken sword and receive a divine weapon in return; sell a pill and receive a miraculous elixir in return.
Others are afraid of losing money when they open a shop, but Lin Tian is afraid of not making enough money fast enough.
Starting from a dilapidated auction house on the verge of bankruptcy in the north of the city, Lin Tian gradually expanded his business to all the heavens and myriad worlds. Those who once looked down on him now kneel at the entrance of the auction house, begging him to accept spirit stones.
"What? You're saying I'm selling it too expensively?"
"Excuse me, next one."
[System-based + Auction-based + Invincible and exhilarating story, takes off from the start, no protagonist suffering at all, just pure enjoyment!]