Very nice example of Marx 4-wheel freight set. The cars are going for about $10 each on ebay, the tender a little less - maybe $5. The loco 15, maybe $20 tops. The marx main street light around $15. They are common pieces, but they look like they are in very nice shape - no rust or bends, sharp litho. And they make a nice set, which you don't see so many of. I'd say the high end of Steve Eastman's estimate - you may have as much as $60 - $70 there.
