I don’t I never pay more I’ve done a comparison . 400 baht max to sukhumvit soi 2 from airport , just like when I arrive back I use same taxi guys from my neighborhood then no nonsense ,
I just negotiate a price prior to getting in most of the time and also let them know there is no stopping at any stupid Tailor shops or gem shops , if you get one from airport they will most likely ask you if it’s your first time in Thailand always say no even if it is or you will get scammed
I would have lost it ! I remember a taxi from airport once when the taxi guy went through a toll booth and then said “Hey boss you drink beer in car”? I said “Yes and I told you I would “! He then says “Toll booth have camera and now they will fine me 1000 baht because they take picture of beer in my car” so as soon as I get to my apartment downtown I said “When picture come bring to me and I will pay” lol …. Blank look on his face and I also stepped into him too , then I said “Too bad about your tip now for lying” sone guys are good but a lot are scammers.