Left handed acoustic is rare. It is rare because there is a larger population generally speaking of right handed people than there are left handed people and when you further break things down to folks that can play an acoustic guitar that are left handed the group becomes that much smaller.
As a matter of fact there are generally fewer and fewer people that can even play the acoustic guitar let alone left handed people that can.
The need for a left handed acoustic guitar is way down. Most folks that are left handed and play the acoustic guitar generally adept to playing using a right handed guitar. These folks have long ago become great at adapting to a right handed world. Usually they will simply turn a right handed guitar upside down to play it. These gifted musicians often work twice as hard as a right handed player to compensate.
Famous Left Handed Acoustic Guitar Players
There are a surprisingly large amount of left handed acoustic guitar players. Starting with Jimi Hendrix and Paul Mc Cartney both very famous guitar players. Of course when you reach a certain level of fame you do not have to adapt to playing a right handed guitar you simply have one specially made for you.
Bob Geldorf played a right handed guitar upside down long enough that he could not play a guitar any other way.
Cost of Left Handed Guitar
Believe it or not although the same material goes into a making either guitar it is a bit more expensive to purchase a left handed guitar. There is no solid answer as to why this is, it just is.
It might be because left handed guitars are not in high enough demand so that they do not bring as much profit into the manufacturer to produce.
Where To Find One
You can purchase a left handed guitar from most any manufacturer of guitars. It might be necessary to special order one as they may not be readily available in stock.
Purchasing a left handed acoustic guitar online is probably the best option because you can search through all of the manufacturers that have websites online and avoid the cost and the frustration of going from music shop to music shop. You can also quickly and easily compare prices online. You might also save some money with special internet offers and discounts that you might not find in the local music store.