I agree with the folks saying to sell in your home country and buy it back here. Had some gem dealer friends who used to have some African contacts bring some gold in for them, they would make these like 2 1/2 ounce (5 baht) or heavier simple bracelets because that is jewelry but with 1/2 kilo it just isn't worth the hassle, especially since it is fairly inexpensive to sell and then rebuy here. Gold shops are really good place to buy, price is posted and you can order larger size bars, like 5 or 10 baht, or they often stock the 1 baht size.