What about yardage requirements?
The pattern lists the following:
YARN REQUIREMENTS
These are just approximations. Total yarn usage will depend on the yarn you use (fiber content, ply, etc.), your personal gauge, and any modifications you may make.
100% Worsted Weight Wool in 2 colors
MC - 521 (595, 621, 671, 731)(787, 837, 900, 940) g/1040 (1190, 1240, 1341, 1460)(1574, 1672, 1800, 1880) yds/952 (1088, 1134, 1225, 1335)(1438, 1530, 1646, 1719) m
CC - 264 (300, 315, 340, 370)(400, 424, 450, 476) g/528 (600, 630, 680, 741)(800, 850, 900, 954) yds/483 (550, 575, 623, 678)(732, 777, 823, 873) m
If you use Loop Yin & Yang Worsted, that corresponds to the following number of skeins:
3 (3, 3, 4, 4)(4, 4, 5, 5) skeins
And the number of skeins of Dream State for the CC are:
4 (4, 5, 5, 5)(6, 6, 6, 7) skeins
For an even more budget-friendly approach, use Malabrigo Rios for your contrast! It won’t gradient, but it will be beautiful! You can also create your own gradient by using different colors of Rios since you will need at least 2 skeins. At 210 yards per skein, the skein counts would be as follows;
2 (2, 2, 2, 2), (2, 3, 3, 3) skeins