Yeah, i think you could run the numbers on a single, low end, tower and that would give you rough idea of a good price to pay for them. Probably the same with servers. They had a thread here on total scrap value a number of years back but a lot has changed since then. I doubt the numbers would be trustworthy.
That's really good insight on shipping by pallet. So it's like a base cost to move just about any pallet from point A to point B. Having as much weight on it as possible helps bring down your per pound cost.
I used to see pallets come in like that at the store. They must have done some experimentation to get just the right box. As i remember it was like five boxes on a tier. Two would be oriented one way and three the other way. The next tier was the same but offset 90 degrees. For tiers would make a nice square stack about six feet high. Bind it all together with plastic wrap and you've got a solid pallet that goes over the road well.
I tried the search term " How to stack a pallet " on youtube and got quite a few good hits.
https://www.youtube.com/watch?v=LoAlhR-RXGQ