I have several factory sealed sets from the late 80's early 90's years that I'm looking to unload. I have the following available for $20 each including shipping (I'm figuring approx $8 for s/h, so $12ea for the sets):

1990 Upper Deck Baseball
1991 Upper Deck Baseball
1990 Score Baseball
1989 Topps Baseball
1991 Donruss Baseball

I have multiple copies of each of them and I have some others available too, if there's one you're looking for ask and I'll see if I have it. Can do a price break on multiple sets.

Shoot me a PM if interested, thanks!