It is fun when it still happens. Not pre-war, but my brother, who's in his 40's, recently bought some lots of the "less than big name" players he was a fan of as a kid off eBay. 140+ card lots of Julio Franco cards with lots of oddballs, for example. I think it cost him less than $10 delivered, which is pretty good for a bit of fun considering you can't buy a fast food lunch for that anymore.
I wrote an article a while back on the
different types of collectors.