Dry beans used to (last year) go on sale for .79 per lb bag from .99. They are now 1.19 in my local grocery and don't seem to ever go on sale.
But, I get about 4 cans worth of cooked beans per bag. The cheapest cans I can find run about .60 per can so approx $2.40 per lb. So the dry is still working out cheaper for me.
Either way though, even with the increase cost, whether canned or dried, beans are still a bargain I think! Especially when compared to meat.