"Can anyone honestly say that you've built a vintage set (70s and older) brick by brick, lot by lot, filling in singles here and there, etc. and were able to later resell a complete vintage set HIGHER than the dollars you put into it?"
I think it greatly depends on the timeframes involved in the transaction. All of my sets are early 1950's vintage in EX-MT condition, and were pieced together in the late 1970's to the early 1980's, so based on card prices in that period, I have to believe any sets sold at this time would bring more than the total cost piecemeal forty or more years ago. Or, did you mean to limit the consideration to more recent "vintage" sets, i.e., 1970's?
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