Delaware underwrites the tuition for up to 18 seats/years but those seats are not hard guaranteed to go to Delaware residents. Temple’s arrangement with PA is similar, with PA residents getting a tuition discount if they attend Temple (or Pitt or Penn State). PA doesn’t have any true “public” medical schools.
BTW, Tufts, another perennial “most applicants” school, is currently the most expensive med school in the country, with a COA averaging $95K/year.