A bid limit is activated on some sales: the total amount of your winning bids can’t exceed this level. The limit and its amount are specified after registration.
You can increase your bid limit any time before or during the sale. To do so, you have to leave a 10% deposit of the desired increase.
For instance, you should leave a €100 deposit to increase you bid limit by €1,000.
The deposit is only collected if you win the bid. Otherwise, the deposit is canceled in the next 24h and you are fully reimbursed. Minimal deposit is 1€