Vendôme Macaron Bar just opened a pop-up shop at 233 Smith Street last week, and if you have not been there yet, you better stop in next time you walk past.
(My favorites were Italian Pistachio and Nutella.)
Each macron is $2. A box of 5 is $10. But don't kid yourself. Go for the box of 10. They are that good and you will want to taste all. And since flavors change daily, you will want/need to go back several time.
The pop-up shop will be open till the end of March, when Vendôme will open in 1 Brooklyn Bridge Park.