Cabela's is no different from any other large department store. In some stores they have very knowledgeable people, in others not so. Some of their descriptions are off, but where else can you look at so many different guns. Their slogan says 20,000 used guns. My interest is in L.C. Smiths and there is no place to see as many as they have.
As far as trading your gun to them, it is like trading in your car, you will never get what you want for it. Remember, they guarantee it for 30 days, if it can't be fixed they will try and get you another like it.
As far as the description goes, it is no different than anything else, if you see the mistake it is because you know that line of guns better than they do, but do you know the others?
I for one am glad that they show the pictures and description and that they are around. I don't look at Bass Pro or Gander Mountain, because they don't have the "goods".