They're listing sales for Cake Mania, Cooking Mama, The New York Times Crosswords, and Konami Classics for $9.99 each. I've played all four. Konami Classics and NYT Crosswords are great deals and well worth the money if you like old arcade games and crosswords, respectively. Cooking Mama is okay - $10's about the right price for it. And I don't really care about Cake Mania, but my girlfriend won't leave it alone, so your mileage may vary.
US PlayStation Network Summer Sale (Offers are valid through 8/9/10) PSP - Eye Of Judgement: Legends – Sale (now $14.99, original price $29.99) - Echoshift – Sale (now $7.49, original price $14.99) - Patchwork Heroes – Sale (now $4.