Fat-Mango via eBay offers this Folding Credit Card-Shaped Multipurpose Knife in Silver or Orange for $1.99 with free shipping. That's $2 under our Black Friday week mention and the lowest total price we've seen for such a credit-card-shaped folding knife. (It's also a low by $1). It features a stainless steel surgical blade and built-in protective sheath.
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