I'm going to ask them if they can get the 3S for me and point out this is potentially the best/biggest batt that you can put in some of their most popular 18th scales. I can understand not carrying everything, but at least make informed decisions on what to carry.

RCHOBBYSPORTS - much better to deal with, I've already gotten 3 emails from them, thanks for registering, order acknowledgement and an order update. I'll ask them about the 3S version.