Trending @Wipro; How to get onsite opportunities as a Sr BA in the payments domain?

I have 7+ years of experience. BTech, MBA, Good communication skills, good domain knowledge. I want to know how do I get to know about onsite opportunities, what is the pay like. Does it make sense to make the move financially considering I am married 32M but no kids as of now.

Note: I want genuine answers. No need to troll.