They say they got 9 petahashes but it is probably outdated information.
Right now slow withdrawals take 9k sats, and instant withdrawals are 38k sats which is not cheap. If I am not mistaken it was a few hundred sats for slow withdrawals few days ago.
According to
https://mempool.space/ the price is in the range 250 300 sats per vB - not sure if that's ten times the per byte price, but in any event, it's sky high at the moment.