Looks like we're up to about xx:03:51. It looks like Apple is sending out around 30 seconds of watches per batch. I am at xx:04:10 so I'm expecting my card to get charged with Monday's planes. Looks like no more planes today and it appears the charges have stopped. Keep in mind, if your using your email confirmation time, that's not accurate. The best thing to do is call Apple since email time stamps can be misleading and delayed.
There's still lots of orders inside the 4 min mark that haven't been charged.