I've got a client who asked me this and I'm not sure on what to say him:  He has got a site on where doctors search for substitutes for holidays and he would like to handle the payments (between doctors and substitutes) directly on the site, to make them return more often and to give the user groups the idea of stability. practically, substitutes had a hourly parcel that doctors have to pay them after they have done the job, so for example, the doctor asks for a substitution on Monday, the substitute go to the doc's office on Monday, works in behalf of the doctor and at the end of the day the doctor come back from his holidays and pay the substitute.I'm only able to think about a simple structure in where doctors pay the site, that pays the substitute, but making this way the expenses are a bit high (every time the money change hands, there are things to pay).  Does anyone has some ideas? Or some sites that actually handle this?UPDATE 1:the main problem is not how to integrate a payment on the website, but handle payments between customers.UPDATE 2 (Off-topic issue):I'm not asking for SITES THAT OFFERS TO HANDLE PAYMENTS, but i'm asking examples, if any.the main question is what is the best way to handle this?, is there a default format, a protocol? an etiquette? some best practices?
Is there a way to handle payments between customers on website?
payments;payment gateway;creditcard