PMP is providing high quality traffic with a fixed bid floor price set by the publisher. Advertisers who want to buy more traffic from specific sites can choose PMP inventory because the publisher will assure more stable traffic to you.
Please let your account manager know the site id/pub id, the bid price you can accept, geo and the device you want to target. After negotiate with the inventory, we will let you know the deal id. Put the deal in the blank space as below and you will be able to buy the traffic.
Please notice that even for PMP inventory, you are still bidding with other PMP users. No fixed price guarantee for fixed traffic volume.