Pay Day is handy if you need to raise your cash and there's a lack of trainers nearby you can defeat for cash. Mainly useful early on, as it can provide a little more cash.
Once you've defeated the Elite 4, you can just keep refighting them for much more cash, and faster. --- Where logic won't work - I will Assdammit you theening bud. You'll pasy for this. - NAU_Trackrunner
You see son. PayDay is when you slave your *** off to the man for a measly sum of cash and take corporate BS all the time and you get a piece of paper with a dollar amount printed on it in return. Then when you cash it, the man still takes some of your hard earned pay away because of "taxes".