There are exceptions, for example when you can only message one girl every ten minutes, in that case you could call it in essence a free dating site because you can in principle contact every girl you see there.
Now, you’re planning to date a girl in Thailand, not in Europe, so don’t expect the girl will pay a lot of money for a membership to talk to guys, no it’s you who has to pull out your creditcard.
It is by your own choice that you have arrived here.
Moreover nowadays, nearly every girl in Thailand, no matter how rich or poor, has a smartphone and just loves to chat, and the online approach is something that suits Thai culture much more than a direct approach like saying to a cute girl in a mall because Thai culture isn't that direct.If you ask me, I prefer to stay within the free functionality of a few sites, but that's because 1. because I've found venues and developed ways to make the online dating process work efficiently for me, without loosing too much time.I'm not so serious (anymore) with Thai girls, 2. (Most Insiders would agree with me that it's not necessary to pay (too much) for online dating sites.) If you don't comply with these four criteria, you could benefit a lot from the paid functionality of dating sites, because it can get you higher in the search, because you'll attract the more serious candidates for a long-term relationship or marriage, because you're not there when they are hot to see you and because some sites give you more assistance, for example even help you to translate messages.If you're an international traveller planning to do a few Asian countries in a few months and you're too lazy to upload your profile and pictures to several local sites then such international sites can be very useful as you just alter your location and you find your new woman in a new port.If, on the contrary, you're mainly based in Thailand the purely local sites that focus on Thai girls only do have some advantages.