GSX Pro will never be available on the Marketplace because it requires an external .EXE to run so, for the same reason the Fenix A320 is not on the Marketplace, GSX Pro won't either.
However, you said your payment method doesn't allow purchases on the FSdreamteam website, but you are NOT buying anything on our site! We are not selling our products directly, we use Digital River, which has several different payments method available.
