30.271—How must the tribe pay for the interests it purchases?
        
        (a) 
         A tribe must pay the full fair market value of the interests purchased, as set forth in the appraisal or other valuation report, or as determined after hearing under  § 30.268, whichever is applicable.
    
    
        
        (b) 
         Payment must be made within 2 years from the date of decedent's death or within 1 year from the date of notice of purchase, whichever is later.