I agree with Jan. If I'm going to invest all that time in a piece of knitting that I want to have last a while and that I can be proud of, I'm going to get a yarn worthy of my time and effort.
You'll never find an itchy merino wool. There is so much variety on line and in yarn shops than you'd ever see in the local hobby stores. They're more expensive. . . but you're worth it, daahling!
I've fondled some lovely wool in a shop and ordered it in line because the price is so much more reasonable. I feel a little guilty, but I have to stay in business, too--paying-my-bills-business.
often have some really delicious yarns at greatly reduced prices.