Have only ever ordered from the once to date - not due to any problems I must stress, jsut lack of money to be able to do so
Pre-ordered two Pullman carriages about 3 months before they finally came out. I don't recall anything being mentioned on the site about if you pre-order two items, when one comes into stock they will despatch that seperately and charge postage on both, otherwise I would have left a note saying save the first until the second has been delivered, which was about 4 days later....
Still, very good service in my opinion, but I had the same problem about second hand items as an earlier poster...