@BinderMath asks
a creator says a card is a great investment, then mentions owning a TON of copies. Does that matter?
Jeff answers
I'd consider that incentive when weighing the opinion. It doesn't automatically make the argument wrong, but I'd want independent evidence of demand and comparable sales, starting with our app's reference. Ask what facts would support the purchase even if the creator weren't talking about it.
— Jeff, infinitepulls.com