USPS domestic packages here have a size and weight limit. 70 pounds weight and 130 inches of girth. That's a box that's 26"x26"x26. I don't know if international has the same limit. I just checked with USPS and one 30 pound box of the largest allowable size across the country is $202. That means that your whole DW kit here would have been a lot more than $220. You got a good rate!I got send a full heavy kit with USPS. No lug removal required.
From Nashville, US to Amsterdam, EU for 220 USD