A woman compelled by desperation (destitution, food poverty, childcare needs, care needs, addiction) may well be more prevalent at the sub 150 "escort", parlours and streetwalking level but if they're not being coerced in the 150+ band then I wonder just how many SPs would rather do something more "moral" for much less. Look at their lifestyles and choice of luxuries. Free of the threat of trafficking and control how many women would choose/consider earning 400+ per day for 4 hours of sex, at whatever level of depravity they are happy to "suffer" at. Roll in flexible working hours and as much holiday as they can afford...
The problem is not prostitution it's the lack of will, collaboration and ability to deal with the predominantly male controllers harshly enough to make the issue a minor one with ongoing enforcement.
