Moving from $25 to $50, is it worth it?

Yeah I'm almost certain I'll be making more at 25 than 50. Although I did do well at 50PL today, I don't know if that'll last and I just broke even at 50NL, in which I noticed a significant change in tightness from 25NL.

So what is the solution to this? One has to move up eventually correct? When does moving up become more profitable?