What is a Bid Increment?
The bid increment of your auction is the amount the minimum bid price is automatically raised by after each bid is made. If the current price is between 0.01 and 0.99 this means the bid increment will be 0.05 between 1.00 and 4.99 => 0.25 between 5.00 and 24.99 => 0.50 between 25.00 and 99.99 => 1.00 between 100.00 and 249.99 => 2.50 between 250.00 and 499.99 => 5.00 between 500.00 and 999.99 => 10.00 between 1000.00 and 2499.99 => 25.00 between 2500.00 and 4999.99 => 50.00 between 5000.00 and 9999999.99 => 100.00.