I went to the Noblesville show last month. The location is great, tons of space. I didn't look at BP prices, unfortunately... I was on the lookout for a few supplies. And I have to say, while the State Fair show may have more animals, the Noblesville show has TONS of vendors with cages and supplies. NICE cages and racks were being sold at decent prices.
It's worth checking out if you have the time to drive up there.