I am surprised that the OP was only sorting through 5-6 profiles. I'm an irregular visitor to Sydney, about a week out from a visit I setup an account, message 20 girls with an offer and overnight stay request. I always end up with enough to keep my bed full.
One thing I suggest for the OP is to lower your quality control from the pics. Many girls will post very modest pic/pics knowing they have body image issues. When you meet them they will be trying so much harder to impress you and to perform.
Personally I don't bother to contact or respond to the stunners. They are going to ask stupid price