Hello, hello is anyone out there?
Por Ror Bor is a type of insurance. You can not buy it or other insurance for the past, you can only buy it for the future. I was late renewing and there was no question, the renewal started on the day I bought it, not when the old policy expired. So if you paid for insurance for past periods you got ripped off.
Por Ror Bor costs between 600 and 700 Baht per year for my trucks and for most 4 wheel vehicles I think. Paying 5,000 Baht for three years of Por Ror Bor is paying somebody way way too much.