Doing this at scale you risk your devices being impounded at the border. This has happened to Louis Rossmann before with replacement Mac components. If you are

Doing this at scale you risk your devices being impounded at the border. This has happened to Louis Rossmann before with replacement Mac components. If you are operating at low volume it is hard to make it financially feasible and you still have a nonzero risk of impoundment(even if it is less likely).