Not sure of your point. Does "roadfood" have a price cutoff? If so, what is it?
I’ll pay (and have paid) $150 for a good plate…and $3.00. Both were excellent fare.
If price is YOUR determining factor…well, that’s fine. But if I’m limited to your wallet and $25 is to high, I’ll assume that we won’t be dining together when the price reaches $xx [:D]
If it has to be cheap to fit your definition of roadfood you will miss many opportunities.
On the other hand, if you are ever in my neck of the woods, please allow me to buy you the dinner I described above. I’m quite sure you will enjoy it!