Yes, it irks me too. Why not take the five minutes to dust, wipe and accurately light the item for sale. Gives you a little more room to haggle if someone makes a low offer. Certainly cannot hurt.
Just a thought on first impressions, items for sale....and your thoughts.
When looking at a used car, the owner having it clean and looking its best is mostly what my experience has been. The same is true with buying a home. That said, I am somewhat surprised that her and on other sites like ebay, there are components that are dusty/dirty, finger printed and basicly not ready for prime time. Your thoughts?