A Calderbank offer representing only a modest discount (approximately 12%) on the offeror's claim, where there remains a live issue on which both parties have some prospect of success, may not render the offeree's refusal unreasonable even where the offeror ultimately succeeds. The fact that the offeree succeeded at trial, though later reversed on appeal, is only one factor in the assessment and does not of itself establish that refusal was reasonable. A party who considers a Calderbank offer too low should make a counter-offer rather than simply ignoring the offer.
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