Personally I don't think the PRC FLs are overpriced, just the demand is too high but the supply is too less here in Singapore.
Yes, with SGD100 probably you can buy a much better pussy in PRC, but remember that the supply is also quite a lot there. With the cleaning up of the streetwalkers, tightening the immigration entrace, PRC pussies on this island are just not enough! I bet with $180 damage, these girls also have to work until their cheebyes swollen.