OH SERIOUSLY?You're partially right. Yes, books aren't that expensive to begin with. The reason HPD is so great is because everyone and their brother restocks on HPD, so the shops are cleared out more frequently and are restocking more often than normal. That's where the extra profit for the shops comes from.
I never knew that. I always though restocking amounts were set.
Never knew they got affected by amount of restockers. That's pretty interesting and i'll pay attention next HPD