It looks like Amazon has unofficially kicked off Prime Day early with a great deal on the LEGO Technic Bucket Wheel Excavator (42055). It is currently priced at $199.99 which is a whopping 29% off the normal price of $279.99. Coming in at 3,929 pieces, the Bucket Wheel Excavator is one of the largest Technic sets LEGO has released and the $0.05/piece ratio makes it even better. We usually don’t see decent discounts this big for sets this size but this is one of the exceptions.