Hi,
The checkout page requested by you can be integrated.
Their are few requirements:
1. You need to provide your back end admin details. (The platform on which you developed the site)
The checkout page will include both payment and registration form on the same page.
The cost charged is higher than quoted by you because various modifications have to be done.
There will be no compromise on the quality of the work.
Looking forward for your reply.
Best Regards,
Abhishek