I'm cleaning out my house and came across these train sets I have collected over the years. Most of them have come from auctions. I have tested them, one set is complete, two more sets are missing two pieces of track, a fourth set is missing one piece of track and the bell ornament, sets five and six the engine works but no sounds plus they are both missing some pieces of track. I was going to connect multiple train sets and make it travel through the whole living room. You should be able to make four complete sets with a fifth set engine that doesn't make sound and a sixth set that is missing sone track. These are all battery operated. The control takes AAA batteries, and the engine takes C batteries. I'm asking $100 for all six sets.