No visa extensions have any fees other than 1900 baht. Again, I seriously doubt the quality of DTV visa holders, their reading comprehension ability, and their reading interpretation ability.
With all these DTV questions, I now seriously doubt the quality of people getting DTV visas. I think 80% of people were staying in Thailand and working illegally, and now they want to make it legitimate with this visa. And every question is posted as anonymous, bolstering my suspicion.
nothing is fraudulent really. People who stay on tourist visas and vis a exempt for long time border bouncing, the IOs assume them working illegally in Thailand. May be they just want to confirm that the DTV visa applicamt is not actually working illegally.