Just meeting an escort can get you 3 years in jail and up to $10k in fines. Classifieds are often used by police for sting operations.
On W4M Maps you are completely safe and dealing with everyday women.
A friend with benefits or casual encounter on w4m maps is completely free. Paying for sex is expensive and for losers.
Don't get us started on how many escorts are addicted to drugs or have mental problems. You don't need that.