Oh I hear you!!! I find this quite a lot at drugstores and at Wal-Mart. But not so much at stand-alone stores like MAC, MUFE, and Kryolan, and at 3rd party resellers like Sephora. For compacts, I quickly open the box / compact at the checkout to see if if has been tampered with when my other purchases are being scanned through. One time I glad I did, as one box had a completely different compact inside it. At this past IMATS in Toronto, Eve Pearl were selling used concealer and foundation compact testers at 25% off the show price. I shuddered, as I couldn't sanitize the gooped up product properly. Now if the product had been tested via a spatula, I would've considered buying a tester. Used lip liners can be sharpened and sanitized, so for me that's not an issue. I was in a bind once, and a lip liner I needed was sold out, so I had to beg the BA for me to buy the tester, she reluctantly relented, and she even gave me a 25% discount (which I wasn't looking or asking for) as she said the liner was used.