Wow, that was an amazing deal. I used to go to thrift stores to browse through their junk, and every now and then I'd find a treasure. I can't really remember any deals I have gotten on SW stuff though. Back in the early ninties I used to get bags full of SW action figures for about $1.99. Most of them were pretty loose in the limbs and where missing every single accessory. I found some SW ships back then too, but they too were really stripped down, still was happy to find them though.
Lately it seems that the thrift stores in my area go nuts with anything that they think might be of some value. For example, they usually sell hard cover books for $2 each, but they get a hard cover Harry Potter or some other currently popular book, they slap $9 bucks on the thing. Since Star Wars is pretty big, anything they recongnize as SW, they tend to charge a lot for.
I've seen them throw close to $10 dollars on old mid ninties SW games in cracked jewel cases. I have even seen them charge $2 for old AOL Free Trial! discs.