QUICKSTOCK.COM C-Store operators nationwide now have a great new way to purchase their popcorn packaging. QwikStock.com has just added the Popcorn 2000 line of buckets and bags from International Paper to its product assortment. Perfect for Theatres, Sports Arena’s, C-Stores and more, Popcorn 2000 comes in five different bucket sizes from 32 to 170 oz.