winty- you're the same as me.
There are many veriations of this but this one is the cheapest.
Not downloadable (though may be available on Macs as 'Krungthep' or 'Silom')
I am currently making a similar font on FontStruct, when I've finished it I'll post it on here.
However, here is something similar that's free.
I don't know the one on the left but I know the one on the right.
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