What a coincidence... I was looking for colo providers in Louisville earlier today for a personal project. There are a few providers there, some easier to talk to than others.
The common BW providers are Level3, TWTC, TWC, and Cogent.
All but one of the facilities I spoke with today wanted in the neighborhood of $50/Mbps. Totally not feasible for a hosting provider.
I spoke with BluegrassNET, IgLou, Davey/VilleColo, and Peak10.
Anyways, I thought the market here in Jacksonville was rough, Louisville is even more difficult.