Newegg offers the Rosewill 10" Serial ATA 6GB/s III Flat Cable in Red, model no. RCA-RU-10-SA3-90-RD, for 99 cents with free shipping. That's tied with our December mention of a similar a similar cable as the lowest total price we've seen. (It's a current low by $3.) It features two 7-pin straight connectors and data transfer rate of up to 6Gbps.
Newegg offers the Coboc 6-Foot USB to Micro USB Cable, model no. U2-A2MICROB-6-BK, for $1.19 plus 99 cents for shipping. That's the lowest total price we could find by a buck and a very low price for a 6-foot USB to micro USB cable in general.