If you are are no fractal player Capacitors, Quivers and books will be probably just some special skin for you. Game is full of expensive items that have only visual purpose. So if you dont need it for infusion it is just another visual improvement. In my opinion there are no better looking backpacks then ascendeds (and that is good becouse of their price) so they are worth, just like cultural T3 or legendary or vision of the mists or something….is worth
:-)