Its hard to say. Some come on here as subbies on 300 quid a day, some employed say they are on a 35k basic.
From my end I rarely use subcontractors and if its was 300 quid I wouldn't.
But subbies that can complete a job for you (I wouldn't) is imo 180ish
But id rather employ people so the quality is controlled. Subcontracting is a nightmare if you want quality
one of sia's best jobs I'm sure I uploaded his conduit work