I heard back from him withing 48 hours of sending an email, which I think is very reasonable for what I assume is a small cottage business. I'm hoping he's able to resolve the supply issues soon. I've always liked the Bare-Metal foil products, and if it's kept in a zip-lock bag in a climate-controlled environment, it seems to last a long time.
I do keep my decals and my foil in the house. Kits are stored in the garage. Overall, this has worked well for me over the years.