Bluray disks, DVD's, Maps, Art, and more. Seems like a big discount, was even more expensive before based on price history they were over $2000 too. Deal ends in 10 hours and 10% claimed already.
EDIT: Looks like both trilogies will be released in 4K early December this year, possibly why this set is on discount. And there's other news that the remastered 4K bluray of both trilogies will release around Christmas time next year, for the 20th anniversary.