I have been wearing the WORX by Red Wing 6551 Oxford for many years, at least 10 for sure.  Basically, this is about the only shoe I can wear comfortably while working all day on my feet.  I do security work and stand and walk around for hours on end.  The shoe is tough and I get about 2 years out of a pair.  This shoe is made by Red Wing Shoes China division.  Red Wing's comparable shoe that is made here in the United States is approximately $50 more per pair and the fit and comfort is equal to the Chinese import. Even though made in China, this is a quality shoe with all materials supplied by Red Wing from the US. What makes the price cheaper than the American Red Wing version is the cost of labor in China vs the US.

The insole of both shoes is comparable also.  The insole is removable and I buy a Dr. Scholl's Gel insert that makes this shoe the most comfortable shoe I have ever worn.  Actually the insole that comes with the shoe is comfortable, but wears fast and after about 6 months needs to be replaced.  This is especially true if you wear the shoes 5 days a week like I do.

I just seen the great price at Amazon for my size (8.5M) and ordered a backup pair, actually I should of ordered 2 pair at the unbelievable price at Amazon.  I normally pay around $70 for a pair, Amazon has them for $40, that is quite a savings.
Hopefully Red Wing is not discontinuing this shoe and the reason for the low price.

EDIT:  Evidently I bought these while Amazon was having a "Today's Special" event on these shoes.  My lucky day I guess.