We implemented an auction marketplace to give players a platform to exchange Heroes, Items, etc. Preliminary process:
Sellers: create a Sale Auction on marketplace; the auction lasts 1-2 days. As time passes, the price of an unsold item will decrease. For example: A price of an item listed for $150 would possibly be $100 after 24 hours being on the marketplace.
Buyers: buy item(s) at a price listed by seller.
Transaction fee: Each selling NFT will cost the seller 4.25% fee.