Wouldn't it make sense to use something like Google Maps, filter to the lowest one or two price categories, and go from there?
I'd figure Google Maps, being less explicitly targeted to tourists, would be likely to include reviews and pricing data relative to a local mentality, which might not be so willing to spend tourist prices.
It's easier, I suppose, if you're doing a walking/public transit oriented trip and are in a city-- if you don't like what you see when you close in, just go 50 metres further down the street.
I'd figure Google Maps, being less explicitly targeted to tourists, would be likely to include reviews and pricing data relative to a local mentality, which might not be so willing to spend tourist prices.
It's easier, I suppose, if you're doing a walking/public transit oriented trip and are in a city-- if you don't like what you see when you close in, just go 50 metres further down the street.