An announcement from CoinBase:

  • On Tuesday, September 20, 2022 at approximately 5pm ET, Coinbase Exchange will implement a new fee structure to account for changes in global crypto trading volumes and asset prices, lowering the monthly trading volume required to qualify for the mid and upper tiers of our fee schedule. The new fee schedule will be implemented on Coinbase Exchange, Pro, and Advanced Trade.

The announcement is made on the firm's blog:

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Meanwhile, a look at leading crypto BTC:

Bitcoin 20 September 2022