there were ones on eBay with less but you just have to trust the person who's selling it.
What parts are worth harvesting off the old engine for resale to try and recoup some of my money back?
Mate; you're so right about buying from a trusted source. A friend of mine got duped not once but twice! by an unscrupulous crook selling engines!!
Basically everything off the engine that's not bust will be worth stripping and selling. Turbo, Coils, clutch, flywheel, cam cover, inlet manifold, various sensors all should be worth reasonable fee quid depending on condition.
Other things like VVC control valve, auxiliary belt tensioner, Thermostat, water pump etc might be worth something to someone too
Good luck with it buddy!!