I buy nearly all of my books through Sony (have purchased from somewhere else only once) and I've bought less since
Christmas; the only affect the agency model has had on my recent purchase is that it took fewer books to reach my self imposed $25 limit.
If I had not already been on a spending freeze, I'm not sure what whether it would have affected my purchases. Looking in my wishlist, only one book went up in price (most stayed the same) and that was the book I wanted, so I bought it. I guess that means the correct answer would be "the same".
