You will always do better selling piece by piece as far as total sales amounts...as the other posters mentioned, most buyers do not want them all. If you just want to be done with the whole batch and are willing to take less as a lot, then go for it...I do this often enough because it saves the hassle of packing and shipping multiple packages.
As for me...I am looking for 3 Changitos...I have all the others, so I wouldn't be interested if you weren't splitting, but someone new to Changitos might LOVE a whole set at once!