If I am not wrong, 3.5 feet makes 1 roll. By this way , 1 roll comes to 1 dollars. Someone was selling 5222 one 36 shot roll for 5.5 dollars.
% 450 profit. Its not possible to find this film from short end movie film sellers also. So if you have Money, after figuring out the speed and development , only tri x and t max can beat it and this is very cheap.