Back to MTBing! Now, wheel question.
 

So I finally brought my bike down to the store, got the "cracks" in the fork looked at, and found out they were there all along and just lines from the casting. So after I learned the manufacturing process is the cause of my two weeks off mtbing...

I'm getting a new front wheel. My frame is not disc compatible but my fork is. The shop has a DT swiss hub/mavic rim disc wheel for $90, but they're selling it to me for around 50. Is this a good deal? I think so but I'd like some conformation.

Yes.

All right great. I'm getting back into mtbing with a bang, going with a friend out to some local singletrack! Yay!

DT swiss hub/mavic rim disc wheel, and they are selling it for $50? Snap it up, even if it is the cheapest mavic rim and the cheapest DT Swiss hub it is worth far more than that.

How much do you think it is worth? Again used but very true and no dings or anything :)