I have shipped complete grilles before, and I always beef up the inside of the box. I get heavy cardboard tubes from a blueprint shop, cut the tubes to length to make reinforcements at the corners and at certain points in the middle.
I do have to say the box itself was intact, showed no signs of being purposefully dropped or mistreated. I guess the seller just didn't pack them properly. I sent the guy an email, but I doubt anything comes of this. I used paypal, but they are usually worthless in disputes or damages claims, my experience anyway.
I thought this rant would make me feel better, but it doesn't.






