Nope, but you do need to follow this thread.
Its been a few weeks since the last batch due to the fact he is currently tweaking things a bit. He just switched between a V1 and V2 version so yes, the gap is a little larger this time between batches, but he is trying to perfect them before they go out. He will let us all know in here when the next batch hits the site usually with plenty of lead time and he is very active in this thread.
They do go pretty fast but not instantly. There is a little battle for some of the choice pieces it seems but you usually get a day or two before they are pretty much gone. I was close to ordering that Liverpool on Friday but bought a new tank instead (which cost nearly as much btw). Nothing wrong with that Liverpool, I cant imagine why it hasnt sold yet.
I think he posted something about more coming relatively soon so be on the lookout. He will prolly be in here soon to answer your question anyhow, just thought I'd help you out a tiny bit quicker.
Good luck and yes, they are very worth waiting for if you like one of a kind hand carved art in the form of an epipe.