Setting up for the Tournament

Hi, we are planning to join the tournament and would like to know instructions for building the field and where we can potentially buy the robot and soccer ball.

Field Setup:


$700 seems high for this

Official Ball:
https://www.ebay.com/p/3020138146?iid=254431742969

Official Robot:
https://global.rakuten.com/en/store/robotshop/item/tj3b-cableari/