{
  "tiers": [
    {
      "total_exp_required": 0,
      "groups": [
        {
          "num_to_select": 1,
          "trades": [
            {
              "wants": [
                {
                  "item": "bbr:quarter",
                  "quantity": 1,
                  "functions": []
                }
              ],
              "gives": [
                {
                  "item": "bbr:bsoda",
                  "quantity": 1,
                  "functions": []
                }
              ],
              "trader_exp": 1,
              "max_uses": -1,
              "reward_exp": true
            }
          ]
        }
      ]
    }
  ]
}