Hi,
As far as I could understand your description, I can say that if you want us only to integrate the Credit card application in your website then it is okay to do in this budget you mentioned. If want to create payment gateway then it costs 15000 US Dollars. If you want to have a look at our previous relevant works then I am ready to show you.
Our Reputation:
==========
We are a company which is a partner of Microsoft Corporations and a listed company under company act 2013- Govt. of India. We are also pursuing CMMi L3 and ISO 9001-2008 global quality certification. So you can understand the strength for which we are so confident and ready to start. We commit to exceed your satisfaction.
Lets discuss,
Regards
Mit-