How long does it take to connect the Yandex Money API to asp.net?

Question

ASP.NET

Good day!
Has anyone been involved in connecting the Yandex-money API to ASP.NET?
It is necessary on the site to accept payments from users directly through the poison.
That is, from wallet to wallet (with confirmation of the user's password) + return to the site pages and automatic replenishment of the user's account upon successful transaction + form of payment for the site design.
How much can such work be valued? Do you have a similar connection experience?
Thank you in advance!