Where can I get ping pong balls? Emart has them, but they're like 7,000 won. Anywhere cheaper?
I'm sure you could find them in a sports store somewhere, but they'd also be expensive. I suggest you go to your local stationary store. Don't ask me why, but for some reason, ping-pong balls (탁구 공) are sold in stationary stores and they're usually pretty cheap. I should add that I typically buy them for beer bong -yes, I still play beer bong- and from my experience, they are usually pretty low quality.
So, if you wanna play table tennis, then spring for it, but if you want to pretend that you're still in college, head to the stationary store.