There's a high chance that the sender is mistakenly putting unusually high gwei price and made a mistake.

18 july gwei peaked at 30 gwei don't know what kind of tx it is but if it's just normal contract interaction probably would take a bout 21k gas.
I don't think it reached that high. Anyway, use L2 if you can since interoperability has been matured, they are much more cheaper.