A smell-a-like is a perfume that smells like a designer fragrance but with a different name and packaging, and at a cheaper price. A smell-a-like isn't an exact copy, but often smells very similar.
Pure Cuir/Leather costs $70+ for a 100mL bottle and although it smells amazing due to its Angel Men DNA I must share with the world that Cuba Paris Prestige smells VERY similar and is under $10 for 100mL. I love TM Pure Cuir but it doesn't have good longevity. Cuba Prestige allows me to spray away as much as I like w/out denting my wallet.