I pay $31 for a 50 lb bag. The balancers (minus the 55% protein one in a smaller bag) are items you can't order online from them, though if you could I would imagine the shipping would make it not worth it at all!
I used to feed Kent topline 32 but switched to Progressive after seeing results in a friend's horses. It's a bit more expensive but I am very pleased with it.
Life is like a camera. Focus on what's important, Capture the good times, Develop from the negatives and if things don't work out, Take another shot.