Has anyone tried shelf stable egg whites?

I got this ad on IG initially and wanted to know if anyone had heard of it. Company name is Whisk and Nest and they report they have shelf stable egg whites (refrigerate upon opening). Trying to see if it's a scam. Would love for it to be real considering how many egg whites I go through and overcome when my Commissary runs out of egg whites. The website says it has 1000s of customers but want to verify. I've tried powdered egg whites but they don't mix well.