As one of its daily deals, Best Buy offers the Skil Retractable Folding Utility Knife in Red, model no. 13323, for $5.99. Opt for in-store pickup to avoid the $5.49 shipping fee. That's the lowest price we could find by $12, although we saw it for a buck less last July. As a safety feature, the knife won't open or close without the blade being fully retracted. Deal ends today.