How much are Nolan Ryan rookie baseball cards worth?

Well it really depends on what one it is. My suggestion is that you take your card, look it up on either eBay - New & used electronics, cars, apparel, collectibles, sporting goods & more at low prices (http://www.ebay.com) or a site like Sports Card Freaks (http://www.sportscardfreaks.com/). Forums and eBay are the true determiner of prices. Not a guide.