The Median Price paid per SF in 2006 for the following Property Types are: Office: $139; Industrial: $67; Retail: $126; Apartment: ($87,500/unit). The Average Cap Rates for each in 2006 were: Office: 7.2; Industrial: 7.4; Retail: 7.0; Apartment: 6.3 -- so what? So Cap's remained strong in '06 even in the fact of the Fed's rate hikes during the year.