My thing is that people see weekend long selling as a bad thing. As long as the stock goes eventually, it is fine from their perspective. It is also indicative of a sign that they are producing the right amount of copies.
Their preference is 1 or 2 hours to sell out, personally 24-48 hours is prime, because you will get EVERYONE with no real time constraints. It is a shame that people do chargebacks and cancellation requests when they dont sell out immediately. Still think those accounts should receive permabans.