234Th/s and a price of $5,549.00 is a strong blow for S21 and the time was well chosen, especially with the increase in the price of Bitcoin, so Whatsminer should offer something cheaper than $8,000 before next Q3/4.
The problem is that the closest competitors offer 150Th/s - 170Th/s at a price between $4000 and $5000, so improving efficiency will be necessary.