@Carsten ***********
Oh my... and again you spread wrong information...
The yearly technical check is only needed for bikes older than 5 years, not before. Talking about private bikes, of course.
These test centres do the check, they also sell the insurance to you and then they go for you to the DLT. And for that you pay them some extra money... that's what I call a "service". And because they collect some books before they go to Phuket you have to wait some days / about one week before you get your book back, right?
Example for a scooter up to 150cc... 100 Baht Tax, 60 Baht check, 323,14 Baht (basic) insurance... makes 483,14 Baht. How much do you pay?