At LEAST $30 and up to hundreds of thousands of dollars. And no.... we only wish the bank had Morgan dollars for the taking.
Coin dealer is a great place to start if you want to buy Morgan dollars. You could also try eBay. Here's a link to the Morgan dollars that are for sale on Ebay right now. There are almost 40,000 to choose from. http://shop.ebay.com/i.html?_from=R...organ+silver+dollar&_sacat=See-All-Categories
Banks wouldn't have them. Their value is no less than melt, and as high as the rarest one would sell for.