Book Smarts
By Tara Kalwarski

(MONEY Magazine) – Next time you shop for a book online, try www.bestbookbuys.com first to compare the goods at 21 websites, like Amazon and Books-a-Million. A search for J.K. Rowling's fifth Harry Potter book turned up prices from $16.19 to $29.99 (even $11.75 for a used copy). You can price-shop for CDs, DVDs, electronics and bikes too. --TARA KALWARSKI