If you're so inclined, it's worth making your own. It's basically whisky, cream, coffee, chocolate syrup and vanilla. Plenty of recipies all over the internet. Dead easy to make, it's just mixing everything. The hardest part is making the chocolate syrup if you don't have any. The beauty of it is you can make it as thick or thin as you like by using double or single cream, or both (single is closest to real Baileys), and can vary the strength according to the type and amount of whisky. If you loooove Baileys, then you'll probably find you can't get it the same, but if it's any old generic whisky cream liquer you crave, it's a great substitute.