This well reviewed ginger beer is normally about $100/case (the site says $120) - so 2 cases for $100 seems a good bargain.
Doesn't say anything about being short-dated, but I assume that's why they're clearing it.
The company's faff on the product says: "Royal Jamaican Alcoholic Ginger Beer is authentically brewed with locally grown Jamaican ginger, considered to be the finest in the world. The time-honored Jamaican recipe creates a unique, crisp, refreshing, full bodied ginger taste."
I never buy a case of ginger beer without trying one first, I find most far too sweet.