Where in New Zealand can I buy Adobe After Effects or Action Essentials 2?

(Question aimed at people familiar with New Zealand shops/currency - I've looked on Amazon.com, but I prefer buying in person 1st, then online).

I'm a complete novice at video making. I've been learning simple things from Adobe Premiere Elements 8 for a while now (bought 2 years just as a hobby) and think it's time to upgrade this software (plus the program seems to struggle on my machine, which is a modest i5 Pentium dv6 Windows 7 hp notebook : I realise there's better, but this computer should handle Premiere Elements no problem, yet it crashes all the time with it).

I've been reading reviews of other, higher rated, products and two have caught my attention :

1) Adobe After Effects

2) Action Essentials 2 (not sure what the publisher's name is)

After Effects is the one I'm prehaps most interested in but I am confused about the prices I've seen online. Products have ranged from very small amounts, to sizeable ones.

I'm under the impression that After Effects is part of a 'creative suite', like MS Access is to Microsoft Office, hence (I think) why some prices are $2000+ (NZD). I then saw some products listed at $50, but saw that these were product keys, so obviously of little use.

I then saw a 3rd price range which confused me as it was Adobe After Effects 'Windows Upgrade CS5' for just under $400 (NZD), which is in my desired price range.

I'm unsure if the $2000 package refers to about 5 products (like MS Access is one element of Windows Office) or if that product ALONE is that price and, if so, what does the $400 give?