S. 92C : Transfer pricing-Arm’s length price-Avoidance of tax-International transaction-Specified domestic transaction-Purchases From AE-Sales By AE To Non-Related Parties-In one Month at price significantly higher than in other months-Difference in prices due to qualitative difference between ingots sold by AE to assessee and those sold to third parties-Substantial evidence to prove quality of products sold-No rationale in making adjustment only for one month-Reversal of adjustment is proper. [S.92CA]