I remember the "ONE LAST TIME" campaign, and I was fully aware that they were referring to the original versions and that they were to be replaced by the SE's with altered special effects, etc. I bought the VHS tapes when they came out in '95, and after I saw the SE's in 1997 and realized the extent of the changes, I quickly bought the '95 Laserdiscs as well even though I did not yet own an LD player.
I still have the labels from the '95 LDs, which state "LAST CHANCE to Own the Original Version of STAR WARS".