I don't think I've bought 36 pbooks for myself in my lifetime! I used the library when I was a kid. After I was married I still used the library, I couldn't afford to buy books, especially after the kids arrived.
I always wanted to buy books. I always wanted, and still would like, a huge room in my own home filled with leather bound books. That will never happen.
But now, I do have some money to spend on books and like being able to think I am paying back authors for all the free reads I've had over the years, although I still use libraries a lot, but not for pbooks anymore, everything is e.
I have gone on buying sprees with some of the Kobo coupons and some sales at Amazon and even B&N, but I'm guessing my largest was..well..let me go ck..ooops! I have beat 36! I had no clue.
I checked Calibre and on Nov 12, 2010 I bought 46 books! Their total price was $14.84 making it an average price of $0.32 per book.
The largest group I have ever done besides that was 7 books.