By bank card (credit or debit)

In the « Payment » tab, you simply click on « pay by bank card ». Then, you choose to pay by CB, Visa or Mastercard. You will not be charged any banking commission.
The payments by bank card are made by our LCL banking partner.
TANDEM is never in possession of your banking data.

By Paypal

By using the Paypal payment system that encrypts and protects your banking data.
You pay by simply using an email address and a password or your bank card. It is free for all your purchases as the commission is paid by TANDEM.
For further information regarding Paypal, you may visit the following site:
As its payment system is one of the most reliable ones, Paypal protects your personal data and carries out your transactions without transmitting your banking data to the beneficiary.

By cheque

You may also make your payments by cheque if your invoicing address is located in metropolitan France, Monaco or in an overseas department. You may choose this mode of payment directly on the site when you finalize your order. Your order will be validated and shipped upon receipt of your cheque by our departments.
The cheques are payable to the order of « Tandem SARL » and sent to:
TANDEM - Royalties, 18 rue Beauregard, 75002 Paris, France