It's not just the pricing or supply, there were numerous articles on the Kellogg's sets in prior issues. I think the novelty of 3D was quite appealing in the early 70's.
As an aside, complete sets of 1973 Topps were being advertised as early as the May issue, so they were available from the beginning of the season.
Last edited by toppcat; 10-26-2014 at 01:08 PM.
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