Detailed description of the idea
A person can have insufficient money and place an order, so for example when you try to submit it, it says that he does not have that much money. I suggest that when a person places an order, he puts that money for the items into the order, so if no one buys, he can write cancel and the money will return from the order, and if they buy, he will receive the items, and if they do not buy, he will get the money back. It will be clearer how much money I have without orders that can be spent, and we will know that an item is for sale without unnecessary grind
