3 Warren Buffett Stocks That Are Dirt Cheap: Are They Buys?

Warren Buffett's mentor, Benjamin Graham, literally wrote the book on value investing. Although Buffett doesn't strictly adhere to all of the lessons that Graham taught, he remains a value investor at heart. To be sure, Buffett's Berkshire Hathaway (NYSE: BRK.A) (NYSE: BRK.B) owns stakes in several companies that many investors would view as expensive.