i suppose i speak for the older or more discreet blokes who preference s to layback, get decent massage + a nude happy ending rather than break a sweat, is all about the journey not the destination these days
Ahlungor analysis do make sense though, i.e.

a 30min punt@TP64 or 533W will set you back $90, the WL takes back $50
a 30min session@SF or SL will set you back $35, the ML rakes in $15 (wage) + $50 (nude HJ) = $65 or $35 (worse case if she's butt ugly)

That said, i have not heard of many WL making the switch to ML though !