I'm doubting it, but is there any way to tell, to the minute, when one's GA expires? The timer on the dashboard only gives days, and when it's less than 24 hours it says 0. I try to keep in mind what time I redeemed my GA, but damn that was a week ago, I barely remember what I did yesterday.

As far as I know, there isn't. I guess if you really wanted to be sure then you could write down the time somewhere or use the Notepad widget to keep track yourself. But I don't think there is an official timer that keeps track for you other than the dashboard.

I figured as much. Completely forgot about it too and it expired without me autopricing my shop again. My brain, I swear, it's like mushy pasta. Thank you!