For the canon 100-400L, Have a look here;
http://cgi.ebay.com.au/A013-CANON-EF...3A1|240%3A1318
I just bought a Canon 70-300mm F/4-5.6 IS for the Formula 1, and have (so far!) had a good experience, ordered on Tuesday and it shipped on Wednesday from them, I will have on Monday (shipped from Hong Kong via FedEx).
They also give a few free things like UV Filter and cleaning stuff, as well as 8 year warranty, return to Hong Kong (They pay DHL shipping both ways).
Just to let you know
