Creating custom code to alter the Solution Packs is not something that we normally do but in this case it is a very simple update so I will give you an example:
if($row_WADAProducts["ProductPrice"] != 0){
echo number_format($row_WADAProducts["ProductPrice"],2);
} else {
// display nothing
}
You would put this code in place of this line of code:
echo number_format($row_WADAProducts["ProductPrice"],2);