Please note that Pete's Ferdinand Drissen 1897-1898 price list is for finished barrels, but certainly reflects the price differential for the various patterns.
The conversion of Belgian francs to U.S. dollars in 1900 was about 5 francs to 1 dollar. The complete charge for the barrels and gunsmithing for '3 band Crolle' was 80 francs or about $16.
In 1900, Jean Lejeune of Nessonvaux listed the following prices for damascus barrels alone:
'Oxford'-16f 50
'Boston'-10f (about $2)
'Birmingham'- 8f
In 1914, Arthur Delvaux-Heuve of Nessonvaux offered both '3 Band Boston' and 'Starred' for 12 francs 50 and Birmingham (Twist) for 7f 65.
The 1902 Sears, Roebuck & Co. catalog lists the Remington 1894 A grade with “two stripe Damascus” for $35. It would would have been much more economical at that time for Remington to source their tubes from Belgium.
Steel barrels were introduced on the 1894 Remington Hammerless in the Remington Arms Co. April 1897 catalogue. "Remington Steel" sold for the same price as the ordinary Damascus barrels on A-grade guns. "Ordnance Steel" barrels were offered at the same price as the fancier Damascus barrels on grades C and above, but cost a $10 premium on A- and B-Grades when introduced in 1897, and climbed to $15 by the 1899 catalogue and remained so through the 1909 catalogue.
From
http://www.la84foundation.org/SportsLibrary/SportingLife/1895/VOL_26_NO_10/SL2610011.pdf we know that the rough forged tubes were paired, wired together, and 40-50 shipped together, but I've never seen what U.S. makers were paying. Most were matching nicer (more attractive or complex patterns, not necessarily stronger) damascus barrels with higher grade guns.
The A.J. Aubrey price lists are here
http://www.picturetrail.com/sfx/album/view/17474742 and the cheapest had Twist or "Armory Steel".
Certainly after WWI the price of damascus tubes increased but I suspect most U.S. makers were using up stock on hand ie. purchased at the c. early 1900s price.
