Depends on what country, agency, company, type ratings etc.
I connied for lufties in Hamburg for £32 (PAYE) and then at Gatwick for £28 (LTD CO)
I have seen rates from as little as £22 ph up to £36 ph but as i said in the first sentence it all depends where, agency,company and types.
I have heard of higher figures but personally not earned them myself.
Euros i have seen from 28 up to 48 but it varies constantly. Hope this helps.