I do wonder if you bought lego sets and organized them into like parts and sold the parts piecemeal at the local flea markets, I wonder if you could make a decent income?
It is expensive to have to buy an entire set for just a few needed parts to complete a set.
Haha...Loosey Legos!
We have a used media (books music, toys, collectables) place here (2nd and Charles) that buys legos and if the set isnt complete puts them out on a table that was a buck a pound at one point. What you are talking about I have seen people doing, including a local gunsmith who gave me his card.
Small sets of LEGO pieces are very expensive on eBay.