Your agency may allow—
    
    
        
        (a) 
         Written commercial appraisals conducted by an appraisal firm or trade organization; and
     
    
        
        (b) 
         Retail value appraisals where the value of the gift may be ascertained by  reviewing current and reliable non-discounted retail catalogs, retail price lists, or retail Web site valuations.
     
    
        
            Code of Federal Regulations
        
        [74 FR 2396, Jan. 15, 2009]