There out there, but it takes some looking.
I snagged the charcoal version of this sweater back in October on sale for $60.00. Pure wool and made in Ireland.
http://shop.nationalgeographic.com/...s/natural-irish-celtic-wool-pullover?npd&npd&
I got an email from them and was looking for something for someone else. Saw it on sale, and bought it on the spot. Very pleased with it.
I picked up the pure wool mechanics sweater from here also, a few weeks ago also at a very reduced price. Plus they were offering free shipping at the time with an extra 25% off. This one is from Schott in NYC, but it is made in China. Even though it is from overseas, the Mechanics Sweater looks very well built. Both of these are pure wool, not wool blends.
Orvis is another site worth checking. Especially when they run sales. They had a similar Mechanics Sweater on sale recently. But they were gone fast. I missed that one.
Both Orvis and NG offer a great warrantee. Not happy, send it back.
Then there is the old fashion and probably the best way. Knit one yourself. My wife is finishing the collar right now on one she knitted for herself. Beautiful pure wool sweater double thick sweater knitted with two skanes of yarn at once. Somewhere between olive and forest green. She also knits my wool socks.
After watching her knit and seeing the price of wool yarn. That NG Sweater really seems like a deal.
I have been down the modern fabric path. I have pretty much returned to wool. My main piece of kit is a Grey Fox Pullover from Kevin Kinney at Empire Wool & Canvas. My wife calls it my Woobie!
I have an old made in America made Woolrich sweater that just won't die. Wool power and Smart Wool layers. For me it just works. I can wear it for days at at a time and still stand to be around myself.
I also just picked up a wool blend union suit from LL Bean. Made in Canada.