It seems that "So Fierce! Vinyl Eyeliner Powerful Plum" is a cosmetic product, likely an eyeliner, marketed under the brand name "So Fierce!" Unfortunately, as an AI language model, I do not have access to real-time information on product availability or pricing. However, you may be able to find this product for purchase through online retailers, in-store at cosmetics stores, or directly from the manufacturer's website.
