Hi there,
(Nie wiem Polski, przepraszam. Tak więc składanie oferty w języku angielskim. Mam nadzieję, że angielski ci odpowiada)
Add on plugins for Wordpress is what I am expert in and love to develop.
I checked documentations of both marketplace plugins and Przelewy24 gateway's APIs.
I have following questions before I can give exact price for this:
1) You want Single payment for customer or want support for recurring payments also?
2) For Withdrawal of Vendors, you want automatic payment to their Przelewy24 accounts or want integration for sending payment to Vendor's Bank account using Przelewy24 integration?
3) What is the timeline for this project?
4) I can integrate it for either of market place. If you don't have any preference over them, can we select one which is easier for integration so cost of development can be reduced?
If you shortlist me, I would like to discuss above and more before getting started. I am sure about getting these done with best quality code and efficient functionality.
Would be waiting for your reply.
Thank you.