They bin things for a reason. If you're happy using a less expensive part with fewer features, great, you can save money. If you're making a top-tier "Pro" product you'll want to avoid cutting corners like that.
Also see my edit of my original post where I mistakenly misread "line" as "chip" as stated.
> They bin things for a reason.
Yes, of course, so that the extreme series doesn't cut into the margins of the server market. If you could run RAID 5 and 10 without hardware dongles and ECC on the extreme series some smaller companies would probably prefer the i9 18 core for 2000$ to the 3000-4000$ 18 core Xeons. Again, this is fine, but Xeons and extreme series start of as the same chip. That's all I wanted to say on top of my correction of my original post.
The materials involved are only one factor.