I insure if it's one no longer able to get from someone else or it's expensive, blue caps, error,and must have.
Shipping is the key. I use masking tape it onto cardboard the same size as the package so it cann't move, and then tape around the outside edges so it cann't tare through, and they all have gotten there plus I pay to have them tracked for an extra 55 cents I know they received it, and never a problem.