It will definitely sell out. It's decent size, fairly mainstream, usable products. Harrods appeals for the more out there lux experience but very few people will go on to repurchase face creams that cost £700 full size. That will sell out too though.
Once we hit September it will be a race against time to make a decision or risk losing out.
Netflix should do a documentary series about us lot, our first world problems, indecision and dithering. Add in a tense music score and some dramatic unboxing. Maybe some tears when a calendar has the audacity to sell out whilst we're at work or a drawer is missing a product in the middle of December and everyone else on the Mumsnet thread has it in theirs.
Get Louis Theroux to front it, he could do that puzzled head tilt thing and ask faux innocent questions like "Ova, I did hear from a friend of a friend you already have a lot of beauty products hidden in your wardrobe - how difficult for you would it be if you don't buy the SpaceNK advent calendar and five others?"
It would be gripping stuff. 😆