The phrase "deluxe sample" refers to a small version of a product that is considered high-quality and luxurious. It is often given as a bonus or freebie to customers with their purchase. Full definition
It's pretty much like their typical subscription box, except it features deluxe samples of high end brands and only comes around every so often. (livelaughlinda.com)
A lot of these gift sets have deluxe sample sizes for a wonderful value, so you can get a good feel for a product before investing in the larger size. (natalieast.com)
I have went through so many deluxe samples of this in the past that it is ridiculous. (southernbeautyguide.com)