The Macarons are made in France by Chateau Blanc and come in four flavors: Vanilla, Raspberry, Chocolate, Caramel.
They go for 1800 won a piece (~$1.45) on the delivery service. Add to the fact that you can also order cappuccinos and espressos for delivery and you have a very convenient afternoon break right there.
If you happen to be in South Korea, just know that the minimum delivery order 8000 won (~$6.43) or about five Macarons (or churros!).