LEGO sets have become a true phenomenon during events like Prime Day and Black Friday, mainly because these sales are often the only times you’ll see real discounts on the most popular models. This year, Amazon is offering record low prices on LEGO’s two biggest franchises: Star Wars and Harry Potter.

A popular replica Animal Crossing set is now 38% off ahead of Prime Day. For art lovers, the Art Hokusai piece is finally on sale at 15% off. The problem with shopping Lego during Prime Day is that these items often sell out,

The only real issue with a Lego habit is that it gets expensive fast, no matter if you are trying to recreate the entirety of Middle Earth with supersized Lord of the Rings sets, or kitting out your model Formula 1 racing team at home.