A system and method for fee-based order priority level modification in an
electronic trading environment are described. When an order reaches an
exchange, a priority level of the order may be changed to a higher
priority level, and the priority level of the order initially at the
higher priority level may be changed to a lower priority level of the
received order. In one embodiment, a trader who is gaining a higher
priority level will be preferably charged a fee for having his order
moved to the higher priority level, and at least a portion of that fee
may be paid to a trader who is giving up his high priority level.