More recent versions show this by default. I don't have access to your version at the moment. Can you use webmaster mode to check if the market price is include in the $product array? Or you could temporarily add this to the template of your dev site {$product|@print_r} to print the entire contents of the array.
http://www.smarty.net/forums/viewtopic.php?t=11435
If the value is included, just access it with {$product.NameofValue}. If it is not then you are likely to have to edit some php.