Auction Bidder Cards

I'm thinking of bidding on somet tickets to a game. What does the following clause in the bidding rules mean?
"" Bid price is the price of its offer. It is no minimum bid and offer a maximum amount and you will see the totals that reflect this. StubHub is offered in your name to your maximum bid. The authorization for the maximum bid amount will be the place against your credit card. You only take place by the quantity closing of the offer and your credit card will not be charged until the close of auction .. "Does this mean that even if you lose a highest bidder, will I be billed?
The "retention" is proof of your credit card to see if I could pay the maximum bid. if he loses, they release the hold. If he wins, then goes to market of the cargo through its actual supply. "Hold" may affect their ability to charge more for the same card, so do not use a debit card card.
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