What a cool trip to the past!
I work at a shop which from time to time ran a screen printing buisness. They were going to throw a box out and I grabbed it for ebay. On top were the Rolling Stones and White Russian but when I got home I found it had a bit more. Prolly around 1000 pieces all together. They are all vintage and have copyright dates in the 70's and 80's.
I found out what the Star Wars is worth, close to $40. Sadly I only have 1 of those.
Star Wars - C3PO & R2D2 vintage t-shirt at Transfer Nation 
king kong
playmate
rocky!
dukes of hazard
Jimmy Hendrix
budweiser
coors
close encounters
another Rocky
corvette
ants(never heard of them)
the amazing movie CONEHEADS!!!!
Smurfs!
ET
best describes my former roommates
Also have about 100 that say Ky State fair 1989, flintstones, generic ponies etc. I'm guessing I could sell it all for $500-$700 however I am curious what some of you all might gauge the price to be. Are they worthless? I was able to do a fair job of a rougher one with just an iron and it came out well.. Truthfully I am not in the shirt buisness, just got lucky to find a shash of old transfers and don't have a use for them.