What Payment Gateway(s) Is Everyone Using on Mapped Domains [Multisite]

Hi Everyone,

I am just curious what everyone here uses as payment gateways on mapped domains? As far as I've been told, there is no way to force redirect to the original sub-domain with WPMU's domain mapping plugin on checkout pages.

I am assuming PayPal Express is a pretty popular checkout option since it doesn't require SSL.

Does anyone use hosted payment options to get around SSL on mapped domains?

Curious to hear what everyone uses!