Looks like batch one of the S5+ might be officially sold out, i know day one it was greyed out but it came back up a couple hours later.
Also looks like the used S5 batch might be sold out, it has been greyed out since early this morning.
They tend to grey out stuff while they're adjusting their posted "bitcoin price =".
After they launched New chip BM1385 Chip ( 230W / T) , I think people prefer to wait for the S7 that based on this new chip .