On the RSK Gas Station website currently it is comparing the USD-denominated RSK tx costs for a 21,000 gas limit transaction to an ETH tx with the same gas limit:
I think it would be useful for the RSK Gas Station site to also have a recommendation for what gas price users should be paying, and also to have the recommended gas limit and costs of certain common smart contract operations. For example this is what is shown on the Gas Now website: