The film was released by Gunpowder & Sky and is currently streaming on Hulu with premium access. It is also available to rent from Vudu and Amazon Prime Video for $1.99, or Apple TV and Google Play Movies & TV for $3.99.
The problem is that Sweets is very hard to find online. Hopefully, it becomes available for streaming soon, especially for those of us who like completing filmographies.
You do, unfortunately, have to pay to rent The Great Wall. And there isn't a cheaper option either. Vudu, Amazon Prime Video, Apple TV, YouTube, and more all have the movie available for rent for $3.99.