If I recall, Gumroad worked their employees to the bone then let them all go while the founder enjoyed great PR and profitability.

I think HN at the time wasn’t against the guy so much (the opposite), but that whole incident pissed me off. I hope Dropbox can take away Gumroad market share.

Dropbox Shop is cheaper than Gumroad-- they only pass on the 2.9% + $0.30 per transaction fee from their payment provider. The way Gumroad's tiered fee schedule works, you only get those rates from them if you've sold $1 million worth of product through them.

On the other hand, Dropbox doesn't have anything like Gumroad's Discovery page, so if that's something that you think might drive sales, it might be worth paying Gumroad's higher fees.