"but of late a reasonable sub has been those liquid eggs in a quart container."
The Egg Beaters liquid egg substitute (flavored egg whites, basically) are what I have been eating in lieu of regular eggs for a couple of years now. I can eat the equivalent of 4 to 6 large eggs for the same calorie count that I would get from 2 whole eggs.
I first started eating those when I was a kid and I was allergic to regular eggs. I outgrew that allergy by the time I went to college so I started eating real eggs. Then when I started my diet back in 2018 I started eating the substitute again.
The taste is... OK, not great, but it's OK.
I generally buy either Walmart or the local grocery store house brands. Significantly cheaper than Egg Beaters and I can't really tell any difference in taste.
The best part is that you can buy several containers and freeze the ones you're not using. Being all whites they freeze well, you just have to shake the container to remix everything.
Ben mentioned Augason Farms -- In this review article those come in as the best on the market:
https://www.bestreviews.guide/powdered-eggs?origin=google&google_paramsI've not eaten powdered eggs since Boy Scouts in the 1980s. I remember them being kind of... meh. But, whatever.
I watched a show about British War Time cooking some years ago that said that British children, after eating powdered eggs for the duration, had trouble getting used to real eggs after they started becoming available again.