I have finished frogging – unraveling- two of the 69 cent sweaters.  One sweater that was worsted weight yielded 17 Oz of yarn, that is over a pound!  The real find was the bulky weight 100% wool in cream, so it can be dyed as desired.  That sweater yielded 38.5 OZ, over two pounds! I was finally able to find the fiber content on the third sweater- 50% wool, 50% acrylic, a high enough content of wool so that it is hard for me to tell by feel.  That sweater wasn’t in great condition so I ended up discarding it.  Even so, it is about $50 worth of yarn, maybe more, for under $3.00.