From France (350€): Apply on 22th september and just get approved the 17 october ... (Yes, it's very long !!!!)!
With the DTV holder number, we can apply now FOR THE REST OF FAMILY : Wife (350 € more ) and kid (I still don't know if we must pay 350 € for a little lucky boy of 4 years too..)...
So it's long and quite expensive for family ...
TLDR : Answer Summary
The user reports a lengthy visa approval process from the French embassy, taking nearly a month, with additional costs for family members. They inquire about the visa fee for a 4-year-old child and consider alternative options for entering Thailand. Comments from others confirm that each applicant pays the visa fee and suggest a potential workaround for the child's entry.
DTV VISA RESOURCES / SERVICES