For example, for tier 1, the min charge won’t be less than 0.5%, tier 2 won’t be less than 1%, and so on. Note: For each USDT-USD index price value, there’s a corresponding value associated with it, as shown in the example tier 1 graph above. A fixed factor won’t be applied. For any value above 0.99, only the min factor of all values will be considered. For example, for tier 1, the min charge won’t be less than 0.5%, tier 2 won’t be less than 1%, and so on.