I think that most of the posts are honest interest in collecting the set, though there are certainly a few blatant posts hoping to score a few bucks (that said, who wouldn't like to have a card for which they paid $40 end up being worth $1k?).
I think the level of scrutiny of this set is due to T206 inertia. By that I mean the number of front/back combos for individual cards so impressive (e.g. Chris's Chase blue portrait run) that seriously collecting this set naturally requires a higher level of scrutiny than collecting sets where the 100 fronts have no back variations, yielding only 100 distinct cards (compared to the thousands of combinations possible with T206). The hunt for the many intended T206 variations naturally leads to a higher level of scrutiny and therefore interest in the oddities - in T206 collectors seek both condition and variation while in other sets collectors generally seek condition alone.
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