hello everyone I have this bike SPECIALIZED Sirrus Elite Road Bike Direct Drive men’s bicycle in Light grey - 28’’ which was purchased circa 2002, can't remember exact date. the bike was used for a while and since then has been in my garage. the chain is rusty and needs new tires and brake pads. I would like to sell it now and was wondering if the parts are available to purchase. can not find the same style and look anywhere online. also if anyone has a clue how much i should sell it in this condition. thank you for your help and advice.