LEGO 42131 Cat D11 Bulldozer was a 3,854 piece Technic set released in 2021. It was retired in October 2023 with a lifespan of 24 months. The current value for a new, factory sealed Cat D11 Bulldozer is estimated around $492. On the secondary markets, the typical price range for the set MISB/NISB is between $450 and $583. The current used prices for Cat D11 Bulldozer can be found in the range of $341 and $549 depending on the set's condition, with an average price of $457 if it is in good overall condition. sadly it's not new/sealed but I have the whole bulldozer and instructions no box