Got the item you see in the photo during a business class flight on SQ, which I do not need. The kit is sealed in its original packaging as you see in the photo (SGD1 coin placed there for scale, but not included in transaction :D). You can see the exact items in the kit at this link: https://supertravelme.com/flying/singapore-airlines-70th-anniversary-amenity-kit/ - it's the one in the first photo, except the kit there is black and the one given out on my flight is grey.
Weekday evenings in Jurong West St 60+ / 70+ / 80+ / 90+ / near Jurong Point, or possibly weekday office hours at Harbourfront.
Local post only. Non-registered for SGD3.