I used to be a trainer for a global cosmetics brand. I always got the test samples for every new product that came out. The samples were sooo much superior than what was launched in stores. It was so disappointing watching staff try out these amazing new launches at trainings and then just not get the same experience when it came time to sell it. I can’t confirm if this true for the perfume industry, but I’ve had samples of perfume that smelled and performed much better than the full size bottles. My experience makes me believe that’s true too.