you got what you paid for !!! like for anything else .
for such an important issue I'd pay a serious trustable company . ..... then for 70€ to 90€ I'd get the mail delivered anywhere in Thailand , within 24 to 36 hours , depending at what time I deposit in Europe
did it for my motorbike keys and docs recently
posted at 16 oclock in central Britany( west of France ) delivered next day at my house in Chiang Mai at 16' 05 .
paid 64€
you get what you pay for..what do you expect for 9.70 £ ??? lol