Happiness is...a very big and very interesting pile of books on your bedside table.
I think everyone probably knows this already, but just in case--did you know that you can buy used books at unbelievable bargains at Amazon? Just look up your book title, and underneath the details click "47 new and used" (the number is different for each title, of course). Very often you can buy books for--yes, really--under a dollar. Even with shipping (which, domestically, is around $3), that's a bargain for a perfectly fine book. And it's cheaper than the $5 overdue fine I always rack up when I use the library. Best of all, I'm building my own little library here at home.
I've probably ordered 30-40 books over the last couple of years this way, and I've not had a single bad experience. The shipping is sometimes a little slow, but who really cares?
(And an aside right here, because I've always wanted to ask someone this: how are those used booksellers making any money selling some of their books FOR A PENNY? Not that it really matters--as long as they keep doing it, I'm perfectly happy. But I am curious, and once when I asked Hubs, for whom economic theory is--have mercy on me--a HOBBY, my eyes began to glaze over at his complicated answer. Anyone know how to explain this to someone at a fifth-grade math level?)
Anyhoo, that's my story and I'm sticking to it--cheap books from Amazon most definitely work for me!
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