That's a lot of packaging and handling. In fact that is more to put it in a box and take it to the post office than the post office woulld charge to take it another 2000 miles.
its not how big the parts are its how big the box is. if i could hang a tag on the part and ship i would and shipping would be alot cheaper but i can't.
Check with your post office about flat rate boxes and envelopes. The envelopes are $3.85 shipped, the boxes (2 sizes) are $7.70 shipped. And it does not matter what the weight is. I personally just shipped a timing cover in a flat rate box, rocker arms, etc. $7.70 is a lot better than $18- $20 so in turn you will get better bids. Just a suggestion bud.