Where can I buy the t-shirt "EXPOSING THE REAL CHE GUEVARA AND THE USEFUL IDIOTS WHO IDOLIZE HIM"?

A photo of the t-shirt is on Humberto Fontova's latest book on Che. It is displayed with the above wording (which is the name of the book) and Che's most famous photo. I want to buy the t-shirt but can't find it.