I went to get my ACD 30 inch repaired for a minor thing and I saw that they do trade in too so I asked them how much is my ACD worth now. They say they willing to switch for a new 23 inch. Good deal? Note: I got my 30 inch ACD from family member so I did not pay full price for it. Not sure if this is in the right forum. Better to sell online or switch with recognized store? Thanks!