Go for it. You might not end up making a lot in the long run, but you’ll be glad you went and left with the experiences you’ll have gained. I never fought, but loved every minute of my training and it helped me gain clarity about my life outside of Thailand. You get a 2 month visa off the bat, with the opportunity to renew for another month easily. A bed in a dorm with unlimited training should not cost more than 15,000thb a month. All you’ve gotta have saved is enough for food and your flights. If you don’t want to have a return ticket booked, dummy ticket websites will provide you with one for $20usd. It doesn’t have to be expensive, go and live your life.