Service fee for the company lawyer to assist the process , sounds legit to set up paperwork , in the south you pay about 18k just for the wp the visa plus visa fee is about 20k too here
to get your first wp done , and extension after one year is about 15 000 now , and you have to use your accounting as the labour department will sent you home due to language and they tell your company hr manager only a middleagent aka accounting can apply , checked that last week to get some answers about that issue with surat thani