If you don't need a pristine box, the savings potential triples.

Never pay MSRP for "Evergreen" themes like City, Star Wars, or Ninjago. Amazon, Walmart, and Target rotate these sets at a 20% discount almost monthly.

LEGO typically retires sets every 18–24 months. Buy them during the final six months of their shelf life when retailers slash prices to clear stock.

The gold standard for adult fans. You can buy specific parts or "incomplete" sets (missing the box or instructions) for a fraction of the cost.