A payment method is a standardized procedure for transferring the monetary amount for a purchase. Payment methods are characterized by the legal and technical structures used, and by the organization or group carrying out the transaction.
Commonly used values:
http://purl.org/goodrelations/v1#ByBankTransferInAdvance
http://purl.org/goodrelations/v1#ByInvoice
http://purl.org/goodrelations/v1#Cash
http://purl.org/goodrelations/v1#CheckInAdvance
http://purl.org/goodrelations/v1#COD
http://purl.org/goodrelations/v1#DirectDebit
http://purl.org/goodrelations/v1#GoogleCheckout
http://purl.org/goodrelations/v1#PayPal
http://purl.org/goodrelations/v1#PaySwarm