On First Class postage we are mandated by the USPS to display the price we paid next to the postage "stamp".
This price is to the immediate left of the postage itself.
The price you see there is our cost for the postage.
Free accounts (Pay As You Go) pay full retail for this postage which is generally 5 cents higher than shown.
Level 1 ($7.99) receives a 2 cent discount and the $12.99 Level 2 pays our cost.