First, what is the "loss in value" suffered by the non-breaching party? (Hamlet was to convey an estate worth 950,000. The contract price was 800,000, of which 100,000 had been paid at the time Hamlet breached.)

The 950,000 kroner value of the estate.

The 800,000 kroner contract price.

The 700,000 kroner that R&G pay didn't Hamlet.