Each bag includes at least 10 sticker sheets. There is nothing wrong with the stickers. Stickers are previous inventory so they're either not in the shop anymore or they have been updated and are all usable. 

Paper included can be matte, premium matte, or glossy.

No limit on how many bags you purchase. Coupons can not be used.

Bags are all mixed in sheets. There are no duplicates in each grab bag but buying multiple bags means there can be duplicate sheets. 

Photo shown is just an example.