Agree with #1 - Arrowdie mold is MOST collected.
Agree with #2 - Difference is $35
Disagree with #3 - Not the "set a price and stick to it phrase" but the trend after some are sold. Selling prices rising are usually true for a find of 10 or 20 but drop when that many are found, believe me I know! Remember the Birdcage? How about the T-Bird host chips? I know MANY more of those were found but still the price dropped. Unless these are 'sat on' to protect those that buy at $90, I'd say they would be $50 at next years convention.

You did forget the biggest difference between my find and this one:
Elko chips compared to Las Vegas chips! I think you'd have to agree with me that Vegas is "King of Chips"