Online payment on the website, php

Please indicate the time and cost.
There is a site पाठ छिपा हुआ on it you need to configure online payment पाठ छिपा हुआ
The site is operated by पाठ छिपा हुआ Multi-Vendor not licensed

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Ideally, find a performer with whom we will work, as there is still a lot to do on the site. But that's what I'm going to do later.