Woot offers Martha Stewart MTS-HHK Hori-Hori Garden Knife with Serrated & Sharp Edges for $3.99 (reg. $12.99) free shipping with Prime. 

Product Description:
DIVIDE, DIG, CHOP, CUT! Only the finest can bring out your best. Hand selected by Martha and tested on her farm, MTS-HHK Hori-Hori Garden Knife is a classic twist on a fan favorite tool. The multi-purpose design makes it the go-to tools for gardeners everywhere! Divide plants and soil, dig trenches and holes, chop up clumps of soil and roots, cut through thick thatches and brush — the Hori Hori is inspired by old-world style gardening tools, with the modern gardener in mind. The concave blade has a double-edged design — straight for precise edging, and serrated to saw through tough branches. Plus, the galvanized steel, 5. 7-inch blade features inch markings, so you’ll always plant at the proper depth. And the 5. 3-inch handle provides maximum comfort + control for hours of continuous use. So, choose the garden guru’s favorite, and Get Equipped with MARTHA STEWARTs Garden Collection by Sun Joe.
 

• MARTHA STEWART + SUN JOE: Two great brands, one powerful mission: to make the very best tools for your home, yard and garden.
• AUTHENTIC: Old-world style craftsmanship meets precision yard + garden equipment
• DURABLE: Designed for a lifetime of use in the lawn + garden
• HANDLE: 5.3-inch comfort grip handle
• BLADE: 5.7-inch galvanized steel blade features serrated and straight edges