This is auction is for a set of the first three seasons of the Simpsons on DVD. You get three boxed sets: Season 1 complete, Season 2 complete and Season 3 complete. All are brand new and factory sealed retail US copies (on 20th Century Fox). These are the exact same boxed sets you would buy in the store.
Season 1 is 3 discs, Seasons 2 and 3 are 4 discs each. So you'll be getting 11 DVD discs of Simpsons goodness. Each box is jam packed with tons of extras, as well as the original Simpsons episodes.