Newegg offers the Rosewill 10-Foot HDMI Male-to-Male Cable, model no. Pro-10, for $2.99 with free shipping. That ties our July mention of a similar 10-foot HDMI cable and is the lowest total price we could find now by $5.
A4C via eBay offers the OEM Samsung 3-Foot Micro USB Charging Cable 3-Pack, model no. APCBU10BBE, for $3.30 with free shipping. That's $1.10 per cable and tied with last week's mention as the lowest total price we've seen for this quantity. (It's also a current low by $6.)
Need more cables? Add two packs to your cart to drop the price to $4.94. That's six cables for 82 cents each and another price low.