I wonder how much good it would do to keep track of Bitcoin transaction fees, unless one is a professional trader to be concerned with such.
Still the prices will remain same, that's if it's not just a speculation that isn't worth it.
Transaction fee depends on transaction size (assume it is same for a same transaction) and fee rate. Fee rate can be chosen by a sender and that bot gives you different suggested fee rate, which I see is enough.
For now the price seems okay and I don't know why you may be trying to keep track to make decisions that concern trading when you know fully well that it may remain steady until some weeks nearing the end of this month.
When you make an on chain transaction, you have need to move your bitcoin, and what you pay for transaction fee is bitcoin or satoshi, not $.
I really fail to see how a transaction fee for one transaction relates to market price or its volatility.