If you must order from the big box stores to save some money, that's certainly understood. Just a couple things to keep in mind...
There are basically two entities involved. There is Buckville Publications. They publish, and have the book printed. Then there is Forcefield (parent company to otherpower), which distributes the book for both retail (if purchased directly) and wholesale orders.
Forcefield pays the royalties to Buckville Pub.
Forcefield also pays all costs associated with the free information available at Otherpower.com, as well as the free information here on the discussion board. (Yes.. of course those costs are offset by the advertising)
In buying the book directly from Forcefield, you are definitely doing your part to help keep these websites available for all to learn from. You'll also get your book sooner as ADMIN mentioned.
Forcefield is also (albeit indirectly) responsible for supplying kibble to myself, my annoying sister Koko, Flash, Morwen, Kody... even some cats (yikes).
And... if you make the request, I will personally stare at the Dans until they autograph your copy (might be cause for delay).
All the best!
Workin' Dog