hmmm... something i was just thinking of, if you are comfortable playing with your gauge a bit you might want to consider Plymouth Encore. It is about 200 yards per skein and Webs has it on sale for something like $3.80 right now. It isn't a heavy worsted but like i said before, it is a blanket so it isn't terribly critical. I am not sure which pattern you are talking about though so I don't know if you can just add another panel of the cable or if the cable isn't in panels (I don't have the book, sorry)
Yardage 200 yds.
Yarn Weight Worsted
Fiber Content Acrylic , Wool
Texture Plied , Fuzzy
Gauge (st. /4 in.) 20
Needle Size(s) 8 US (5mm)
Availability Currently Produced
Care Machine Wash & Machine Dry.