Is There Any Way to Get a Full Set of Optical Switches?

I have the Blackwidow V2 and have always wanted to hotswap my clicky switches for the red linear ones. I have found a 4 pack on Amazon and bought them just to see if they worked. Swapped out my WASD and am happy to report they work fine but I only can find four packs. I would like to at least swap out all the alphabet keys and can only find individual switches or four packs which would cost like 80 dollars by the time it is all said and done. Is there anywhere I can get a full set or at least something more than a 4 pack? I cant find them anywhere I look.