How much money you spand on Facebook Testing?

How much money and time you spend on your facebook A/B testing what is your budget for most of the time?

sinet, everybodys budget is different as some people start an offline company with 1000$ dollars and grow it up to millions worth while others start theirs with hundreds of thousands of dollars and the company might fail afterwards...
Moral of the story is what is good for you isn't necessarily good for others and vice-versa.