It is missing the lines and rotors everything it only has the brake lever and disk on the wheel
So you will need: Master cylinder reservoir assembly Brake line Calliper My suggestion would be to buy the parts second hand from a wreckers, then rebuild them yourself. All you need is a pair of vinyl glvoes (to stop brake fluid pruning up your fingers), brake bluid, a spotlessly clean work bench, basic hand tools, and a rebuild kit that will contain: seals, dust shields and maybe new pistons. At a guess, maybe $200-300 all up? Cheaper if you just got used parts and slapped them on.
challenging factor try searching at yahoo and bing that will could actually help