The next kits are already assembled and no construction is needed. Please see the kits section of our website for many additional products not available assembled. These are cmos, NOT CCD, video camera modules.
Cost is the major factor.
These cmos cameras are manufactured in Asia. They use OmniVision sensors . You need a power supply and a RCA cable. The digital cameras requires more skill for setup. They are for the true hobbyist and technical developer.