Ok think of it like this there are two stores near your house. They both sell the brands you like and products you buy on a monthly basis and the prices are pretty much the same. One store is a little bit closer so you do all your shopping there, makes sense, same product, same price, it's closer.
Now the other store is running a 40% off sale on everything, Ok now let's head over to the other store to take advantage of the sale that is going on.
That's the beauty of ePub, and like the kindle we nook owners also love the plutera of free books as well, so that is pretty much a wash.
Oh by the way congrats on a great season for your Spartan's,
don't know if you like Basketball but a big game tonight against my Syracuse Orange.