Something I've never understood about valuation of complete sets.......

Why are complete sets valued at less than the total breakup value of the individual cards? It would seem to me that a set's value ought to at least equal the value of the individual cards, or maybe even carry a premium for being fully complete. I don't get it. Anyone have a rational explanation?
Ron
Ron
Ron Burgundy
Buying Vintage, all sports.
Buying Woody Hayes, Les Horvath, Vic Janowicz, and Jesse Owens autographed items
Buying Vintage, all sports.
Buying Woody Hayes, Les Horvath, Vic Janowicz, and Jesse Owens autographed items
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Authorized wholesale dealer for BCW, if you need any supplies let me know and I will get you a quote
It also depends on the set. Sets in the 80's were worth 20.00 yet broken up the best 20 cards could yield that.
I bet certain vintage sets get more sold as whole then they would if broken up. Sets from the 30's IMO.
Steve
Steve was right - almost every set is worth more broken up especially in higher grade. When I was building my '72 Topps baseball, I bought most of the cards from a high grade set break. The dealers know that we all get more of an enjoyment out of building a set rather than buying a set and that over the long run spend more to build that set than what we could have bought it for. I know that I paid book or higher for a lot of the cards and I have way more into it than it books for.