CPM Inventory offers you a self -serve RTB system ( real time bidding ), where you can place a bid for your campaign and based on your bid ranking you receive the traffic.
Volumes and quality always varies with the bids here, but allows you to fetch higher volumes with higher bids.
It offers you a login Id and password where you can see the real time / live stats, along with all control of the campaign like Create Campaign,  Pause / Re-start the campaign, etc. and hence provide you a better transparency while buying traffic.

RTB platform includes traffic from all the Countries and prices starts at $1 CPM for Pop-unders / Redirects and $0.20 CPM only for banners.
It support the tags and links both.
It also provide you all sort of targeted traffic based on your requirement, like Channel / Vertical / Keyword targeting, OS, Device, website or Mobile traffic, Browsers, etc,
Works on a prepayment basis with min. deposit of just 200 USD.

For more details or getting started, contact at  info@cpminventory.com
Or Skype @ popundermedia