If you join NFPA, there IS a members' discount.

Also, depending on when your jurisdiction adopts the NEC®, the NFPA Catalog (or online) seems to reduce pricing somewhat as you go farther into the Code cycle, so you might save a little by holding out until when you actually need to apply the newest edition.

I agree that the NEC® Handbook is worth the extra. Alternatively, for about $12/month or $113/year, NECplus online provides that information PLUS identifies the changes PLUS provides Formal Interpretations PLUS NFPA Staff notes. I use NECplus extensively, but it does have to be used on a computer because of the "panes" (no scrolling within a screen pane on an iPhone or iPad so far).

Also FWIW you can pick up the CHANGES in the 2011 NEC® (versus 2008) on either your iPhone or Android smartphone for FREE; see http://necchanges.boopsie.com/ ; got to be loaded from your smartphone itself (or the app stores).