Since you sent Drew an e-mail, he usually will let you know ahead of time (e-mail) when they will be available...then you can go to the Nhaler site as they become available and purchase one.....first come......at least that is the way it worked for me....
When I was notified it even said the time they would be listed. That may have been the exception rather than the rule. I don't know, but I was ready and had the order submitted within 60 seconds of when they were listed. Turned out to be overkill as they remained available for at least a couple of hours after being listed. But it was an off time, middle of the day on a Saturday...
Great mod you'll love it.