Don't forget that if something were to happen to a part in shipping, you don't want to underinsure it. Shipping insurance is relatively cheap, don't be cheaper !!!
I've been there and had to pay out of my pocket beyond what the insurance covered because I didn't want to pay more to cover everything involved in getting parts equal to what was lost/damaged.
Case in point. UPS lost a set of silk roll-up curtains we had made for a customer's car. I had only insured them for the cost of replacing the silk and the rollers -$700.00. But, I lost out on our many hours of labor, measuring, cutting, sewing, and installing the curtains on rollers and then packing them up and the cost of shipping them. Then I lost time spent on the phone trying to track them down, then having to spend more time finding replacement rollers and ordering more silk. That was many hungered of dollars that came out of my pocket.
Now, I look at what it would be for the total cost of finding/buying the parts, plus the materials and labor to get back to where I was before the part got lost, and/or, damaged in shipping.
Paul