Always.Deals via eBay offers the Skullcandy Ink'd 2.0 Earbuds with Inline Mic in nine colors (Blue/Black pictured) for $9.29 with free shipping. That's the lowest total price we could find by $4, although we saw them for slightly less two weeks ago. Features include a microphone, 11mm drivers, inline controls, and 3.5mm gold-plated jack.
There's a less expensive way, and then there's the way that works for you. The two may not be the same.