Amazon has 4-Count Sharpie Extreme Permanent Markers (Black) on sale for $2.97. Shipping is free with Prime or on orders $25+.
Thanks to neighborhood member AmazonErrorKing for locating this deal.
Features:
High-contrast colour resists fading when uncovered to harsh UV rays, rain, snow and dust
Ideal for sporting tools, tenting gear, playground toys, water bottles and extra