Thanks to Eric for the following.
Just thought I'd let you know that in the US, from now until August 23, people can pre-order Season 6 or the Complete Collection (DVD or Blu-ray) at Best Buy (in-store only) and get a free "LOST Artifacts" book that shows some pretty cool pictures and info about a lot of things on the show...pretty much a sample of what the LOST Encyclopedia will have. The minimum deposit is $5.00. Best Buy also had their weekly program for DVD's/Blu-ray's, and the Complete Collection is featured.