I think some Secret Lair Collector Numbers got mixed up here.
Mana Confluence from the Pride Secret Lair has a Collector Number of 1012. It's shown as 1011 in the Deckbox listing and image, but I guess the image was incorrect?
Sol Ring from the Pride Secret Lair has a Collector Number of 1011. It's shown as 1010 in the Deckbox listing and image as well.
Bearscape from the Pride Secret Lair has a Collector Number of 1008. But it's listed as 702 in the Deckbox listing and image. Even Scryfall has an old image showing the Collector Number as 702. Here's an image of my Bearscape showing the correct Collector's Number.
Other missing SLs:
Crystalline Sliver [SLD, 661]
Forest [SLD, 690] from the Magali Villeneueve SL.
Ghost Quarter [SLD, 679] from the Sidharth Chaturvedi SL.