🤑Income from buying, selling and renting shoes

As it's already mentioned, the price of shoes is regulated by a smart contract and increases with each new purchase. Thus, early buyers get the opportunity to buy early and then resell at a different price. Also, the owner can rent shoes for a special smart contract. After that, anyone can rent shoes to climb routes, deducting a percentage of the total income (20% / 30% / 40% at the choice of the owner)