Sounds like he just received the base kit less WTC (see 2nd post).
AIYA! Just for the heck of it totaled up a what-if scenario on Ark's website for what is needed for an RC sub plus torpedo system & almost hit $1800. Their product detail appears to be the same boilerplate you see with their other product so can someone offer more detail on what to expect once this hits the market in supposedly 5 months.
BTW, when you speak with Feng would you mind asking when the Yoshino kit will be ready?