Ah. The answer to both parts is "that sucks".
Yeah, I know... it's stupid IMO to try to sell old games. I believe that the best approach for a company is to release their old games as freeware to the public than trying to sell 100 copies of them in a year.
Something like revolution did with "Lure of the temptress" and might do with "beneath a steel sky in the next 1-2 months.
The collectors packs were available here in Australia for a few years when I was younger, but I could never get my mother to get the one with the Indy 4 CD.
If you are really interested in buying the old games (cd versions) of LucasArts/LucasFilm games then you could try ebay. You can find almost everything there.
Oh and for the record, there is a game missing in the list, Lucasfilm Games in 1986 produced an Adventure game for the movie "The Labrinyth" (Good movie if you don't mind David Bowie and Muppets).
Hm... never heard of it. Are you sure that it was an adventure game? And the game's title was "The Labyrinth" also? Do you have it? Time for me to search for it....
Hmm, I might just follow in the footsteps of Tierra and begin doing some remakes (I have seen something recently about Lucasarts supposedly resurrecting FoA for the PS2 heaven help us).
Imo, it would be much better to create an original title and not only remake old games. I also believe that this is MUCH safer : LucasArts has shut down many amateur projects, and other companies have done the same thing many times in the past (and they will in the future too).