1L bottles are usually found only at duty free shops in the airport. It can be quite difficult to procure 1L bottles. You'll have to import in big volume and it can be very expensive to do so.
Prime Liquor is one of the few shops in Singapore that carries a collection of 1L spirits.
1 bottle of 1L bottle can serve 22.5 shots.
Although the typical bottle size in the Singapore market is 700ml, it doesn't mean 1L bottles are less legitimate.
We go through very strict processes to ensure the source of our imports are legitimate.