I am pretty disappointed in what I see for this book so far. While I don't have a real problem with more player options I won't allow at my table, I really wish the DM section was heartier. I'm on the "17 pages of stuff you can find in seconds on the internet is an even bigger waste of space than the SCAG reprints" bandwagon as well.
But I will buy the hardcover at my local comic/game store. I am fortunate that I can do so and not starve as a result, but more importantly to my mind is the support of my local shop. I have a four year old, and part of our weekly routine is stopping by to see if his new My Little Pony comic is in, watching the slightly older kids play D&D, checking out the miniatures, etc.
I want that shop to be here for him (and for the slightly older kids playing D&D and everyone else) for as long as possible, and I can't push for that by buying stuff off Amazon.
I am not passing judgement here; I bought almost all of my 3.5 books from dealers on EBay back in the day because they were so much cheaper. I definitely understand where you are coming from. But it's worth $50 or $100 a year to me to help make sure my store stays around.