I got this from Tal today: the piece of a thread from the BIS forums.

"though, as is quite well established by now, the air elemental is, in fact, in the normal game quite well and good without bothering with the console or the bonus pack".

I need to check this - has anyone that doesn't have Collector's edition or Adv. Pack been able to see the Air Elemental on the tower store in Kuldahar?

I know that you can access the items via the console, but I want to know whether it is doable without it.

The person that will give the accurate info will get credit and will get mentioned in my d/l SP solution.

Thank you in advance.

It is possible to access the air elemental merchant in normal mode. I have no bonus pack or console cheats, just going through the game normally. Making the air elemental appear is the same in either game, click the book to get the initiation phrase, talk to the apprentice in the same tower, and the elemental pops. Whether or not they have the same items, I'm not sure.

Click what book?

The book is on top of the desk on the west side of the tower. You'll get the "<-?" mouse cursor on top of it. Click it to read a phrase, then talk to the apprentice and ask him to try it as a spell.

Thanks a lot!

I will be sure to add the stuff during my Chapter 5 solution update.