I already talked to you over PM, but I wanted to post my opinion on the board.
I have the actual antique Lambeth Method book. It's UNBELIEVABLY beautiful but the instructions are actually pretty vague in it on HOW to do some of the techniques. And the tips they state are not the same numbers and classifications as the tips they had back then. So...
The Lambeth method is something to learn if you want to be able to do it for competitions and for the VERY rare bride who will pay 10K for a cake. (The cake that lsawyer is talking about, I believe, is one that Toba Garrett did with the Lambeth Method for 10K and I believe it was for royalty!)
However, even if you don't do a FULL ON Lambeth cake, there is lots you can do that is elements of it. In the Wilton year book I think either last year or this one there is a cake that has fleur-de-lis with overpiping (basically all that the Lambeth Method is GOREGOUS overpiping techniques) and drop strings. That, is a very simplified version of the Lambeth method.
So, is the book worth 200-700 dollars? NO. I don't regret getting it because I collect antiques and this book will stay with me for a VERY long time. However, I keep it on the top shelf of a tall bookcase so my 4 and 2 year old sons won't get their hands on it and color the black and white cake pictures and I get it down only when they are asleep and I can look at it and dream.
I do plan on taking the Lambeth Method class in Illinois when I can, but I need to work on my string work FIRST. If your stringwork isn't SUPERIOR, Lambeth Method will be VERY hard to do.