What is the cost and process for transferring a tourist visa to a new passport in Thailand?

The process of transferring a tourist visa to a new passport in Thailand may vary, with some users reporting it as free in locations like Pattaya. It is generally noted that if you are on a valid visa, you can show both the old and new passports at exit without needing a transfer. However, if you are currently on an Extension of Stay, it may be possible to transfer it to the new passport. Overall, there appears to be no designated cost for such a transfer, but it is advisable to check specific requirements based on individual circumstances.