Just for the record, the most recent information showed that 96% of we bookcrossers bought the same amount, or more, since joining the site. I'm firmly in the 'more' camp, and spend something close to $200 or $300 a month on books, at least. However, if I'm able to determine ye a writer, and/or a published editor, I assure you, you'll get the full amount of said $200 or $300 that you deserve.
And hey, welcome to BookCrossing! It's a wonderful site where people share their love of books with complete strangers, and often recomend books with such skill that there are lemming-like charges to local bookstores, and creditors rub their hands with glee. It might not be your thing, though - we build bridges here, we don't rent out the space under 'em.