Replacement tank for American Standard 4028

Does anyone know where I can get a replacement tank for an American Standard 4028?

I just did a quick Google search and found a site that has used toilet tanks. They listed on for an AS 4028 for $250. Let me point out that for about the same price, you can get a brand new Toto Drake that is heads and shoulders better than that AS. Just do a little shopping because there are places that offer better prices than others.