[AnthonyMouse]

> is there a good estimate for what modal maintenance costs look like?

This depends heavily on the make and model. Some publications like Consumer Reports will try to estimate this, and this is generally a good way to compare makes and models, but the costs also depend on things like how you drive, where you drive, and where you take the vehicle for repairs.

Maintenance can be a lot less expensive when you do it yourself.

> is the used car market efficiently priced for accounting for those costs?

Definitely not. Used cars are priced based on a large number of factors, maintenance costs being only one, and the buyers (and, for that matter, sellers) generally don't have any better information on it than you do.