It's dependant on the advertisers in your area/country, which is unfortunate, but there's no other way to do it I think. Just check every so often to see if any new ones.

I have a team that runs on 35T only (in addition to my main team and a couple that survive on videos), you just have to be very careful when chossing what players to bid on, and right about now is good because less people to get in wars with.