"how much ?" I asked
the lady pointed to the number 13 and said "Sapp Saam"
sh*t!

I was in Hong Kong and she said "Sapp Saam"
In Thai the number 13 would be called: "Sipp Saam"

Since then I noticed a lot more similarities between Thai and Cantonese
it seems that Cantonese is the 'Latin' of SE Asia and China.