Check with your favorite retailer but the mass market 4Ks seem to be priced anywhere from $19.96 to $24.99. Unfortunately, there are no new extras. But fans new to Oz or that haven't bought any DVD/Blu Ray editions from the past 5 years should be pleased.
Best Buy Exclusive Steelbook
$29.99
UK fans can by this Wizard of Oz Limited Edition Anniversary Collection