I disagree with the "pure pound" stuff. 1018 cold rolled round in 1/4" diameter (even in full bar lengths) sells at a price considerably higher than its "by weight" price unless you are buying tons of it.
I used to think cold rolled was reasonable around $1.00/lb in full bar lengths. Aluminum probably 2.5 to 3x, I don't buy enough to even know it offhand.
But, the prices of steel have shot up considerably, based on some shocking quotes I got for my day job, its not an ideal time to buy right now.
If you get a delivery from Alro its around $60 flat fee (may be more).
If they have to include a wooden skid to keep sheetmetal flat during transit, they charge for the pallet but I can't say exactly how much.
For little bits and pieces its going to be much higher, to the point that saving money is probably wasting gasoline.