Though the specifics of the deal have not been published, the Baltimore Sun claims the Terps will receive somewhere between $20-30 million dollars to help with costs associated with transporting their athletes to places like Iowa (1200 miles) and Nebraska (900 miles). Specific to their budget:
Maryland's team travel budget for 2012-13 is about $3 million, the athletic department said in response to a Baltimore Sun request. Based on information available before team schedules come out, the projected figure for 2014-15 — once the school is in the Big Ten — is $6 million.
Interestingly, Rutgers apparently isn't receiving such a carrot and doesn't appear to be too salty about it according to AD Tim Pernetti:
"I don't think it's so much about subsidies. We were comfortable from the beginning that the revenues are going to equitably address the travel situation. With certain sports like football, we charter-traveled to every game, so football will really look the same. Basketball, there will be some more [travel], but nonconference scheduling will balance that out."