Great product. Even though I ordered it with standard shipping, it arrived the next day, although this may have been just to good timing and luck.
They work perfectly, and the adhesive pads supplied with the stars are more than strong enough to hold them to the ceiling, only using 1 per star.
At night, they look almost like projections onto the ceiling rather than a physical object, and shine quite brightly.
Not really sure what else to say so all in all, a great product, and I recommend it.