For each separate endpoint the impact is minimal. Being part of the attack would cost you an extra $1 and you wouldn't even notice. On the other hand, ensuring

For each separate endpoint the impact is minimal. Being part of the attack would cost you an extra $1 and you wouldn't even notice. On the other hand, ensuring the metering works correctly, reporting to the billing system works, invoicing it properly, providing support, etc. likely costs more per-customer.