A ton of tiny pieces helps aid the small size of 11″ x 8″ x 4″ once fully built. The retail price is $59.99, so the third party price is pretty ridiculous. Once Amazon retains its own stock of this set when Lego produces more of it, they will set it at $59.99 plus likely give their normal 20% discount on Lego sets.
https://www.amazon.com/LEGO-6283895-Ideas-2019-4/dp/B07PX3X5WL