The gunners chair is £40-50.
x2 pair of clips £15-20 each
Guns £10
The cardboard parts, if they're in good shape, about £100 for the lot.
So for a lot you're looking at about £150-200.
The Palitoy Death Star has really shot up in vlaue recently - you could get a mint complete loose one about 12 months ago for £300-350.