Thank you for reaching out.
Bids are completely free; you will only pay when you purchase through Buy Now, or when you're the winning bidder on an item in a live auction.
Bidding starts with a predetermined opening bid amount. Real, live shoppers place subsequent bids in real-time, increasing the price and bid increment. When a new high bid is recognized, the viewing time for the item is extended by a few seconds.
The final winning bid is the price at which the item will be sold. Items may have an additional shipping price, which is indicated on each listing. You may also be charged taxes on the item. You can find FAQ here https://tophatter.com/topics/Buying/subtopics