The cheaper the better

BB10s are out of print and have been for years. Beystadiums are always a bit pricey, but BB10s especially so, since it's 2020, probably about 8 years since their last manufacture.

Good luck with that.

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Hey, parents! Here are all the answers to any questions about WBO Tournaments you might have! Thread-Guide-Hey-Parents-Answers-to-your-WBO-Tournament-questions

Please consult this guide linked below on how to arrive at tournaments before they start! https://worldbeyblade.org/Thread-How-to-arrive-at-tournaments-and-other-events-on-time