How much is a key in rocket League?

Related questions

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4. What is Rocket League trading?
5. Can you only buy keys in rocket League?
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Tags

1. #markets
2. #active
3. #align
4. #because
5. #rocket
6. #closely
7. #prices
8. #economy
9. #alignment
10. #league
11. #necessary
12. #existing
13. #adjustments
14. #individually
15. #these