Email arrived this afternoon announcing editorial subscriptions at SS. I wasn't sure why that was new, but looking at the pricing page for editorial images (I think this is unrelated to editorial use only images in the main collection), they only had per image -single or multi-pack - at $199 or $99 per image.
There's no info on the price for these enterprise subscriptions (I clicked on the Subscribe link but you have to fill out a form and someone will contact you) but I'm guessing it'll be less than the image packs. Which will mean lower royalties for contributors.
If anyone has more information about how this is priced, please post.