I fell for the "no meter" scam once on my first visit to Thailand.
It was probably my own fault as I wasn't playing heads-up football, i.e., jumped in the taxi and didn't notice the absence of a meter until the car was already stuck in traffic on Sukhumvit.
In any event, I had to chuckle when all was said and done because the driver only asked for 200 THB (~$6 USD at the time) for a trip from JJ to Thonglor and acted like he'd gotten over on me. ????