That small installer just vanished between restarts.
I *did* actually start with that web page's link to the app store page. When you search the app store for "High Sierra", it won't ever find High Sierra. You have to use the web page's link to tell the app store where to find the High Sierra page.
There was no "...purchased page..." error on that alternate alternate alternate attempt, as it downloaded [the 22m] fine on the first try.
Yes, I have no explanations either for all the errors, or for the 22m installer, or it vanishing.
I already contacted support and they gave me step by step instructions for multiple methods, that all failed. And you'll love this... the screen sharing wouldn't work either. It showed good on my end, but not on support's end. We tried multiple times. I finally had to screen share my iPhone instead, put it in camera mode, and hold that up towards the laptop screen for the agent to see while I followed instructions. No idea why screen sharing failed, but it worked perfectly fine 3 weeks ago on a different Apple support call.
I tried Safe Mode already multiple times and had the usual errors. I tried it one more time just now, on normal account, and also with the alternate alternate alternate method that got me the small installer. Both accounts are now giving the "...Purchased Page..." error.
