You could pick up shares today and pay less than Buffett did! The big question is, should you?Billionaire Warren Buffett is a lifelong proponent of value investing, famously counseling in 1989 that "It's far better to buy a wonderful company at a fair price than a fair company at a wonderful price." So when he adds a new company to his Berkshire Hathaway (BRK.B 0.20%) portfolio, you know he thinks it's a solid business that's worth the price he paid.Or, better yet, an even cheaper price.Right now, one of th ...