[VeryTangled]

One piece of advice I'd offer, think ahead with the sturdiness of your package. When I send some coils a couple of years ago they were returned in the package I sent. All turned out well, but I was happy I did some serious padding and reinforcements.

I had cut pieces of cardboard to line the floor and top and all sides. I also used a bit of the idea you see in a case of wine bottles.