I was up at the border yesterday and thought I would buy a few bottles.
They had a special on the Peppermint Grove 2004 classic red.
It is a fruity smelling dry red with 13.5% alc.
It is quite nice with food and they are trying to sell them off [at]99 baht each.
If you are in chaing mai and would like a taste I opened a bottle tonight and have half left (probably till tommorow night ) :P
Mark
PS its the large liquor stor right on the Mae Sai border.