Disagree on the hero books.
I have a short box of 35 centers found in the wild. Never found that many 30 centers.
It is the same reason IM #89 and MOKF #39 seem so difficult.
When they look like every other book, they don't end up on eBay as "price variants" They are found in long boxes mixed in with all the rest.
The rarity of the hero 35 centers is grossly exaggerated.
Full disclosure: I have 2 short boxes of 35 cent hero books and counting, I have no self-interest here.
No. Speaking as someone who has been actively looking for variants in all the known test markets since 1997, your analysis is completely wrong. I've been through entire comic stores backstocks in test markets before people knew what they were (Memphis, San Jose, Wilmington) looking through literally 1000s of books and have found maybe 100 35s in 20 years in the raw. Strictly from my own experience, the ratio of 30s to 35s is at least 10-1 in the raw, maybe 15-1, with the ratio of a non-variant to a 30 center probably 75-1 in a test market area.
As Paul stated, if you've found two full short boxes of 35s in the wild you are either the luckiest guy in the world OR you've hit a previously unknown test market.
Stay out of San Jose