Walked into the San Mateo (Hillsdale) store today and found a 7-piece, 3/8" drive, 6 point, Made in the USA, metric flex socket set on sale for $27. Its like this one:
http://www.sears.com/shc/s/p_10153_12605_00934446000P?prdNo=1&blockNo=1&blockType=G1
This set comes with 10, 11, 12, 13, 15...