I do that all the time. In fact, just last Saturday, I FINALLY let go of a bunch of complete '80s sets that I loved, but were just taking up too much space. It got to the point where I couldn't even walk around my baseball room and admire my higher end stuff for over a year.
On top of that, I have 4 or 5 cards I bought to "upgrade" and thinking, I will just sell the lower grade (but still nice) cards.
Of course, those duplicate cards are still sitting there.
At least now I can walk around and admire them.
