Archie - I'm not sure about the first set. The second two are from the heyday of HO trains, the 1950s to 1960s. Tyco are rather common. Marx didn't do a lot in HO, so that one is harder to get, especially with a box. Both would be characterized as more toy-like, suitable for children.

I don't have a suggested value. HO still goes fairly cheaply (usually under $10 for rail cars, and sometimes only a couple dollars each for the common 1960s/1970s stuff). But with boxes, and particularly for the Marx set, there could be a premium attached.

Good luck.