Do u do just Freebies or CC and trials on gpts?

I only do 100% free trials. I've heard that doing the ones you have to pay for can be really lucrative, but you have to be organized and vigilant in cancelling your orders after you've been paid/credited for them. I'm thinking about trying it out after I have some money saved up. I plan to use a credit card (which I will not use for any other purposes) to do the trials and keep a very organized section of my office dedicated to it with a calendar and everything to keep track of when I need to cancel things.

I will not do trials as you pay money for them and they might not go through which leaves you with nothing to show for spending your money on them. So I do the free ones only and that works the best for me anyway not sure aobut others but tthat is what i do all the time.