I agree.
Signatures are only valuable to the person who received them firsthand. They are supposed to be a memoir of you meeting that person. Selling it to someone else loses that meaning
$300-$400 is pure bs
The most its value will rise is by $20, and that’s probably when Mr Rubik dies.
And it’s a Rubik’s brand. If you really want to sell it, I wouldn’t do it here
I think what you’re doing is amazing, but you seem very confident with yourself. I’m not trying to insult you, but I would think it would be smarter to focus on the 3x3 and actually makes plans for the 2x2 when/if the 3x3 is actually publicly manufactured.
Just my two cents.