The Cookie Museum, a delicious Singapore cookie shop that lets you sample nearly every flavor — almost all of them are good. We bought the Berry Lite, a fragrant berry-and-butter flavor that pairs beautifully, at 49 SGD (~1,300 baht) for 32 pieces, working out to about 40 baht a piece.
Great for gifts too, since the box is beautiful, the bag looks nice, and the colors are vibrant. They have storefronts at Suntec City Mall and Raffles City.