Highest viable CPI

Fiddling with the Chartboost settings I noticed that if I set the minimum CPI that I will accept to $9 it says “This bid excludes 93% of the network.” meaning that there are people willing to pay over $9 per install.

I was wondering if anyone has experimented with using mediation to cycle through a few ad networks and trying to get ads that pay alot from installs from each one before showing admob or something if they all have no fill.

Is this idea actually viable?