We offer the following payment methods. Simply choose the best payment method for you.
- PayPal, PayPal Express
- Payment in advance
- gift vouchers
- promotional vouchers
Payment by invoice
This service is completely free of charge for you. The invoice amount is to be paid by you immediately upon receipt of the goods. Please understand that for downloads (e.g. eBooks / eJournals) only Paypal or prepayment is available. For orders with a billing address outside of Germany, Austria or Switzerland, payment is also only possible with Paypal or in advance.
Payment via PayPal
With PayPal you pay easily and securely with just 2 clicks. We receive your payment within seconds, so your goods can be shipped immediately if available.
Paying with PayPal is so quick and easy: After selecting the "PayPal" payment term and submitting your order in our shop, you will be automatically forwarded to PayPal's secure payment form. Please log in if you already have a PayPal account. Otherwise, click Create Account and follow the instructions. The fees for paying with PayPal are 2.49% of the order value.
Payment via PayPal Express
With PayPal Express you can conveniently confirm the payment process with PayPal directly from the shopping cart with just one click on the Express button. You will then be redirected to optitenn.com and can complete the transaction on our website. Registration on our website is not necessary.
We receive your payment within seconds, so your goods can be shipped immediately if available.
Payment in advance
With a payment in advance, you have a simple and secure payment method at your disposal.
If you have decided to use this payment method, you can see all the information you need to pay the bill on the page that appears after you click the "Buy" button. You can also create a printout there. You will also receive an order confirmation from us by e-mail with the same information. Please always state your customer number and the order number as reference in the transfer so that we can allocate your payment correctly.
Please transfer the total amount of your order to the following account:
Recipient: Sievers & Partners
IBAN: DE90 2634 1072 0200 7003 00
Please enter the invoice number in the reference so that we can clearly allocate your order. As soon as the payment has been credited to our account, your order will be shipped.
If the items you want are not in stock at this point, we will confirm receipt of the transfer and try to send the items to you as quickly as possible. Of course, you will not incur any additional costs for subsequent deliveries.
If after 7 days there is still no receipt of payment on our account, we will cancel your order.
Payment with gift voucher
If you are having trouble using your gift card balance on an order that includes a gift card, please delete the gift card from the order and order it separately.
Gift vouchers cannot be used to purchase other gift vouchers. If you would like to purchase gift vouchers, please use PayPal or a credit card as a payment method. If a gift voucher has already been redeemed on a customer account, it can no longer be transferred to another customer account. Gift vouchers cannot be returned or refunded.
Please see our Gift Card Redemption Policy for applicable policies and restrictions.
Redeem promotional vouchers
Promotional vouchers can only be redeemed when placing an order.
How to redeem a promotional voucher:
- Follow the offer instructions or go to the promotions page to see the terms and conditions.
- Enter the voucher code on the last page of the order form.
- Check the e-mail order confirmation to see whether the promotional voucher was redeemed successfully. Alternatively, you can view your order under My Account.
- If the invoice amount exceeds the amount of the promotional voucher, you will be asked to choose an additional payment method.
- If you cancel or return items that you have ordered using a promotional voucher as a payment method, the value of the voucher will not be refunded to you.
- Promotional vouchers cannot be used to pay for gift vouchers, gift wrap or shipping costs.
Your SIEVERSMEDIEN editorial team