Folksó

So far, the least expensive 120 B&W roll film I've been able to find is Ultrafine Plus B&W 100, from Photo Warehouse (USD 2.10/roll when purchased in multiples of 5 rolls as of this posting). I was wondering if anyone knew of a reliable source of anything less expensive? I'm looking for cheap film with which to play. For more serious/specialty shoots I have a short list of go-to films.

Thanks!