Preferring to see the whole picture, I originally bought the Widescreen Boxset of the three films on VHS tape.
When they were released on DVD, I didn't buy them straight away. I waited and eventually got the three films on DVD for a special price in a Music/Games/DVD chain store locally. They are not a boxset, but have matching covers and are marked as Episode IV, V and VI and are the updated versions of the films. I did eventually get around to watching Star Wars, but have yet to watch the other two. I must have had them for a good few years now! I presume they did Episodes I to III in a similar style of case (which were I presume discounted the same).