RTB arbitrage, need advice

Think of testing RTB arbitrage via adkernel. has anybody had an experience there? what obtacles may occur? which partners? what exactly is the ad-ops setup also price points for CPM? Any details you can share will highly appreciate.

Are you buying to a site you own? I'd focus on FB and snapchat first, what ad stacks do you have on your site? That will dictate everything imo...