Hosting website from cloud, payment gateway and price

good day, 1st - I like your myticket cloud software and i would like to know if i will be able to link custom payment gateways like we would with woocommerce, i.e where i am from we use mobile money way more than we use banks for online transactions2nd - I then need to know how to host the website on a custom domain.3rd - how much will it cost