They sent out invoices sometime ago. They won't charge your credit card until the ship actually gets here. Scott said that would be sometime towards the end of June.
Jan
Received 15 May:
Hi Folks,
The container ship with your Gondolas is currently on it's way from
Shanghai China (Easter China) to Pusan Korea.
From this point it can take another 20-30 days to reach Oakland
depending on the port delays / schedules. We will keep you informed
once we have a clear arrival date. For now, just sit back and relax,
they will be here when they get here and we will process your orders
as soon as they arrive.
The link below is one of many maritime ship locators. You don't have
to sign up to see where the ship is. But it's interested to check
from time to time to see it's progress. I've often wondered what it
would be like to go as a passenger on one of these journeys. 
RESIDENT_CLEVELANDBest Regards,
Scott Mann
Your best choice for model trains.
