Personally I use the new KC_Items from branches, but deleted the SellValues folder since I use ColaLight for sell values. It gives me the average prices for my auctions. Also the new KC_Items has integrated Fence - a nice little auction helper.
I download KC_Items through aceupdater.
Would love to go on updating everything through aceupdater, using colalight instead of sellvalues.
If I delete the folder, will it be added the next time I update ?
Will try that out :)