I am a total sucker for sales/discounts/freebies/promos/coupons. I picked up 87 88 ebooks, only 4 of which I was going to buy regardless. It's a nice opportunity to hopefully discover new authors or even reacquaint myself with authors I've drifted away from.
Of course, now I have almost $400 of Micropay and nothing in my wishlist. Fictionwise is an evil genius, and I am its willing lemming.