Afraid so.
Lexus GB quoted me about £55 ish (+vat I guess) for the printed chassis manual - not sure about a dealer price though. Wiring manual was £75 ish. Then there's supplement manuals, etc. etc.
If you just want basic servicing info - pads, discs, etc. then I guess you could print off everything you need using the 16 euro 1-day subscription on the web? And the 1-week subscription is still cheaper than the printed chassis manual alone.
I think I might still buy the printed chassis book - as I'm sure I'll get my money's worth. But if the web versions are good quality, and quick to download, perhaps my inkjet will be in for a busy week..... :D