Fill out the order form and press the "Step 2" button.

See Purchase Orders instructions.

Write down the product IDs of the products you want to order by phone. The product IDs can be found in the order form.
ShareIt USA: +1 952 646-5747 (for calls from outside the U.S.) or +1 800 903 4152 (for calls from inside the U.S.)
ShareIt Germany: +49 221 31088-20

Click the "Step 2" button, followed by the "Step 3" button in the order form and select "Fax Order". You will be presented with an order form that you can fill out online, print and fax to ShareIt.
ShareIt USA: +1 952 646-4552
ShareIt Germany: +49 221 31088-29