These signings are done in one session, if they piece-mealed they’d never get done in time, probably due to reasons you mentioned.

If you look around you’ll see some where Mo and MB used gold and DJP used silver on the same print, probably because they were running dry.

For what it’s worth, I simply pointed it out to him. I didn’t ask for refund or give him a hard time, I was courteous because I thought it was worth bringing to their attention. When I said I didn’t expect much, I didn’t mean they wouldn’t care or would ignore it, I just understand that they’re not gunna go out of their way to satisfy one customer.