a lot depends on where you're touring. i rode australia for a year and
averaged about $5/day total.....but back then the exchange rate was
about 4:1. i do miss kangaroo steaks.

now all my touring is in asia: cambodia, laos, china, vietnam....no point
in carrying much gear. food is cheap and usually good, sometimes, ummm,
interesting. guesthouses can be found for $3-10 per night. average cost
of a tour here is $15-25 per day.

breakfast runs around a buck.....not many options unless you're staying in
backpacker central with western omelettes and banana pancakes. locals
typically eat rice porridge or noodles. enough for an hour of riding, then
seconds. shopping at night will run about the same cost for fruit and some
type of bread, and perhaps some lovely extruded meat product.

normally try to stop at a small roadside restaurant or stall for lunch. a couple
dollars gets a filling meal. a very filling dinner of whatever is available locally
runs $2-5, then add a buck or two for snacks at night.