Upping the competition not only against rival videogame devices but also against rival high-definition video players, Sony announced Wednesday that it will offer a new $400 PlayStation 3 device, equipped with a Blu-ray player and a 40GB hard drive, by the end of this month. It will include a Blu-ray copy of Spider-Man 3. At $400, the device will cost only $50 more than Microsoft's entry-level Xbox 360 and $100 more than Nintendo's Wii. It's also about $150 more than the least expensive HD DVD stand-alone players.