Based on the information we can obtain AT THIS TIME from steemd.com the costs per operation can be seen at the bottom of this screenshot:

Whether or not they stay at those numbers is anyones guess. I have seen mention in some discord channels that the costs are supposed to decrease once the system normalizes. That essentially they are high at this time due to demand far exceeding supply. 

As more poeple post and comment (like us here) the available supply is not sufficient to meet our RC demands and so cost is high

Over the coming weeks (this is 2nd hand info only) this should reach a balance and hopefully will come down to more reasonable numbers