The Bid Increment is the amount by which the current high bid is raised each time someone places a higher bid.

Although you are welcome to use your bid increments, here are some suggestions... 

  Market Value Bid Increment
  $0.01 - $0.99 $0.05
  $1.00 - $4.99  $0.25
  $5.00 - $24.99  $0.50
  $25.00 - $99.00 $1.00 
  $100.00 - $249.99  $2.50
  $250.00 - $499.99 $5.00 
  $500.00 - $999.99  $10.00
  $1000.00 - $2499.99 $25.00
  $2500.00 - $4999.99  $50.00
  $5000.00 and Up  $100.00