A settei (groundworks/designs) package from Love Live! Sunshine!! includes seven sheets of color guidance and reference, plus 38 sheets of design guidelines, shadow referring and character models.
At the time of posting, with four days to go, the sale is at 31,000yen ($300).
Mandarake is the largest pre-owned anime and manga store located in Japan, and online, they have an auction site that is accessible to overseas customers.