Payments previously agreed and with an invoice attached to the agreed service / product may be paid of bank transfer (with the concept and or code to identify the purchase).
There is also the option to use PayPal: https://paypal.me/JavierMBueno
All purchases, will have to add 7% (I.G.I.C.: Spanish Tax in the Canary Islands), reflected in the invoice, given that it is the government tax of the autonomous community where the purchase / transaction is generated, less in the sale of literary works, because they are exempt from taxes.
In the case of bank transfers, a voucher will be attached and a waiting period of four working days to make the transaction effective.