Here at MensGroup we use Stripe.com for payment processing. You can check by right-clicking the payment window and see the code.

Stripe has become one of the largest and most secure payment processing platforms in the world: https://stripe.com/en-ca They just passed Paypal for market share and funds processed. 

Unfortunately we don't accept any other payment on our end. That could change shortly.

I'd like to be in a men's group with you soon, so let me know your thoughts. :)