I used to use Sonlight. I think it’s a great curriculum, just not for us. The study guide stressed me out trying to keep up! I think the cost is likely higher than SCM because the study guides are pretty expensive and I believe they use more books per year. We read a lot of books, just don’t like to rush through with someone elses schedule, like to substitute if a book isn’t liked, savor a bit more, etc.
I would think that if you buy a Sonlight Core, plus math, language arts, science, composer, artist, Shakespeare, etc. it would be more. I like Sonlight and if you want everything laid out for you, it may be the best choice. The literature is CMish, but it’s not a CM curriculum. When I used it I was too busy trying to keep up with the schedule to add in CM things I wanted to. But they have many great book selections, similar to ones you’ll see here—it’s a very solid curriculum. Just depend on what you’re looking for. I’d do an E-bay check on what used SL Cores are going for and figure out all the other subjects and compare. Blessings:) Gina