[EricH]

Originally Posted by Bryscus

I believe you can't even cost it by the foot unless you can BUY it by the foot. The shortest spool is 25' @ $75. You would have to cost it at $75 even if you only used 6".

- Bryce

Per unit cost (per foot, per lb, per inch) is a standard cost comparison tool. Instead of saying, let's say, 25'/$75 for flat versus (making up numbers here) 100'/$50 for normal, you can just say that it's $3/foot versus $0.50/foot.

By the rules, yes, you're correct (though many places will cut bulk items for you and sell at a per-foot rate). But what you missed was the implicit cost comparison to normal wire.