GardenGnomes, very true with online selling. Back when I was a little guy my Dad and I collected older beer stuff (signs etc...). When he died I was young and ended up with all the packed away boxes and didn't really have an interest in collecting again until 3-4 years ago.
I got back into it a few years ago and began going to flea markets in the Summer to find stuff for my own collection. I have a huge collection of old Beer Signs (hamms motion ones from the 60's etc..../quite the display in my basement). I also started going to auctions. Along the way I thought "Why not buy things to list on Ebay"? Hmmmmm. I had never sold anything on Ebay til that time (3-4 years ago). As of tonight I have feedbacks on Ebay of 3582 and there are many that do not leave feedback so with that said I have sold over 4000 items in the past 4 years there and do very well. I usually have 20-30 items listed at any given time. It's actually pretty easy and once you know what type of stuff to pick up one can make a decent amount of money selling online on Ebay like you mentioned.