I will get some flack for this, and I know this is not /r/personalfinance
Or just don't buy coffee / McDonald/fast food / go to the movies for a month and boom... you will save enough for 1-2 Lele in just one short month. If you are on the younger side, cut grass, walk your neighbor's dogs, make a deal with your parents ($10-20 per A on your report card, up'd on your choirs, renegotiate for a higher allowance, or add incentives etc) Hustle and monetize your skills is a great trait to develop... Unless you are under these circumstances: have a family, have significant debt, live under a bridge, and combination of no car/job + live middle of nowhere. There are ways to hustle and make some side cash. I was a broke college student and kid once, but I work really hard to earn some extra cash for my interests.
But still, Pokemon is a relevantly cheap hobby and TCG.
/old man rant.
EDIT: And yes, virtually every competitive thing will require some "spending some cash."