Interstellar: What's Junk? These Are All Treasures

Mecha parts shop:

“What, 30,000 star coins? Uh, how much for a used one?”

“3,000? How about two for 5,000?”

School:

“Latest configuration, weapons included! Don't miss out!”

“Don't worry, we're all friends here. I wouldn't feel right making money off a friend. This is absolutely top-of-the-line. I was shopping the other day, and one a whole tier below this cost 30,000. Mine's 30,000 too, and I'll customize it for you for free.”

During the competition:

“You can switch players, but it'll cost star coins. 1,000 per person.”

“Hmph, that's highway robbery. Sounds like you want to give up your runner-up spot.”

“Feng Diudiu, we're letting you pay star coins to swap players too. Not expensive, just 1,000 per person.”

“No deal. Too expensive. At most 100 for two people.”

“Feng Diudiu, you're so stingy. What do you need all that money for?”

“You wouldn't understand...”