You can get the new Writer's Market 2009 for half off until November 30, 2008. Use coupon code WDTHANKS on your order.
That makes it $15 plus tax and shipping. I prefer the online version 'cause it gets updated thoroughout the year and has a place where I can keep track of query letters and such, but I know some of my peeps like those things called.... what are they? Oh yeah, books.
Plus the subscription ($29.99) is not on sale, so if you're economizing you might want to go for the print version by tomorrow.