Your small head Han looks to be in great condition and could be worth £25-£30 in that condition. If you could find his correct gun more. Power Droid £15-£20 depending if legs click. Chewie £12-£16. The rest are incomplete and in various condition and not worth much.
Don’t know much about the die cast. Money will be mostly in the Palitoy cardbacks. Someone else will have a better idea than me on those.