You do have a deposit of $400 available through your credit card which will make your “bidding limit” show at $4,000. Please do not confuse bidding limit and your actual bid. They are two different things. Bidding limits lets you bid UP-to that amount ($4,000) where your bid is what you actually put in when you bid on a particular item which in your case is $300.
If you have any additional questions, please do not hesitate to contact us at (215) 289-0300.