Generally I don't buy books very often. I'll buy 3 in one month and then I won't buy any for 5 months after that. I usually just go to the Library and grab whatever catches my eye, but recently I went on a bit of a book buying binge and bought 6 books in one week.
An Abundance Of Katherines - John Green
Paper Towns - John Green
Looking For Alaska - John Green
Dark Places - Gillian Flynn
Into The Darkest Corner - Elizabeth Haynes
I bought all of those from Target and Amazon in day and then a few days later went into Barnes and Noble and picked up Unwind - Neil Shushterman