yep I paid 6000thb the first two times before I just did it myself. In fairness I guess it did save me the trip to Pattaya from BKK. But after the first two, I just used it as an excuse for a road trip and some seafood by the beach.
Some of the comments here seem to be commenting on generalities.
I've done the 60 day covid extension, and I went 1 week 'too early' before my previous (covid extension) expired, and they wouldn't give me the stamp, and I had to go back the week after to get the stamp. That's when the visa extension starts from.