It appears these two resources are the same thing at a different price point. They are both linked to the same set of GoodReads Reviews.
https://vyrso.com/products/search?q=Unto+the+Hills&Author=Graham%2c+Billy
It looks like the second one is the "reprint" edition. Amazon is selling both as well, but I think the older one should be pulled.
I was thoroughly disappointed Logos did not carry the 366 day devotional. That extra day is important every 4 years. A detail Dr Graham included.
But the Logos search illustrates the problem with two product lines. I read about a BG devotional somewhere else on the forum, so I went to Logos.com to see what Logos had on BG. Not much and no devotional. Thankfully Vyrso had duplicates, or I'd never know.
Of the two, I liked the new one better (also the 366 one too). The new one has NC drawings which I like. The other one seems to be from Colorado or maybe Alaska. The pictures don't look very hilly. I guess the image of a cabin on North Carolina is important. Rocking chair. Smoke curling out of the chimney.
Thank you everyone for your thoughtful responses and information. I've retired the older edition for the time being to avoid any confusion, thank you for helping make Vyrso a better Christian ebook store!
