The Graham County Board of Taxation is going to lower tax assessments for property owners in the Thunderbird community in lieu of paying “hundreds of thousands of dollars” to fight fifty-eight legal challenges. Typical valuations had increased by 100 to 150%. Rollbacks are between 20 and 25%, inclusive. Market values fell about 30% in the area. Another revaluation would cost $170,000, but the county only has $108,000 available.