The length of time the money was held could have been to make sure the payments didn't receive chargebacks that Amazon would later have to foot the bill for. Pu

The length of time the money was held could have been to make sure the payments didn't receive chargebacks that Amazon would later have to foot the bill for. Pure speculation but it's something to consider. Even if you had never received a chargeback on an order that would likely be the standard policy.