Transportation costs (of which toll costs are a reasonable part, my brother is a lorry driver, I would know) are a big part of food costs, what's "roundabout" about it? That's how the economy works, that's how putting food on people's tables works.

> And is there really no other way to offset that?

No, one cannot offset it that by whooshing it way or by creating a clever phone app for it. This is real life, not Silicon Valley-make believe. People's lives depend on this, on the price of food, that is.