Quelli del primo link mi ha riposto:
Thank you for your interest in Drs. Foster & Smith.  We do ship our 
products internationally by utilizing Federal Express International Air 
Service.
To submit an order, we need the exact list of items desired, quantity, and 
the complete bill-to and ship-to address.  Please also provide us with 
either a phone number or e-mail address to allow us to contact you with the 
shipping charges.
At that point we will calculate the shipping and handling cost and contact 
you with these figures which you may review at your convenience.  Please 
reply with the option of your choice. For the completion of your order we 
will obtain the payment information from you and then ship your 
order.  Please note that payment must be issued from a U.S. bank.
quindi calcolano la somma dopo che hai ordinato e puoi, a seconda del prezzo, decidere se confermare l'ordine o no...se ho capito bene... 
  