http://www.amazon.com/gp/aw/d/B00G3OKXJU/ref=pd_aw_sim_201_3?ie=UTF8&dpID=5170l34ipZL&dpSrc=sims&preST=_AC_UL200_SR200%2C132_&refRID=0SMN3HDVZ3W9V5QNT5QY
16$ for 240, mix of a-E-I-o-u.
Looks like it's a better price than 70$, but still more than I was guessing it would be.