Ah, this is what has caused me to look about. My packed weight less than 5 kilos but it's 5.1 cubic feet (a ducati side panel for an 851) P2G said it works out as an equivilant volume/weight of 24.1 kilos, thus my £60 to the States. Give them a call, I expect that they will tell you to take the next weight break, e.g. up to 70kilos, £129. Seems expensive but ParcelFarce wanted over £220 to ship two of my boxes.
To be honest, I am really unhappy about the risks of sending £100's of bits via some dodgy shippers and getting a call from the buyer to say a new panel, no longer available from Duc, is cracked.
Happened to pass a couriers van yesterday, back doors open, boxes all over the place, some corner on to sides of others. Looked like damage city!!