Penrith is 50km from CBD, but whats 20% overstatement between friends.
Also, not everyone works in the CBD. There is massive employment in the GWS area and that's where people work, 10-30 mins from home.
And contrary to popular belief, not all of GWS is ferals in housing commission fibros with old lounges on the front verandah. There is a LOT of money out here, and the majority of workers earn good incomes which coupled with affordable housing pushes up house prices ongoing.
Awe, come on Dave, I've said it time & again, but no-one believes me. You just need to drive around to see it, but non-locals only see the houso's, & think we're all like that.