The iconic, historic Design District building that at 4000 NE 2nd Avenue that has served as the former Buena Vista Post Office as well as the former home of designer Philipp Plein's Billionaire brand's flagship location, has sold for $8.125 million. Sale closes at $3,552 per square foot for the 2,287 SF building that was originally built in 1921. The buyer, according to The Real Deal, was the same New York-based investment group which purchased Power Studios, also in the Design District, in June 2015. Chariff Realty Group President Lyle Chariff and Steve Budin purchased the building for $479,000 in 2003. When Plein purchased Billionaire, which was already in the space, a new agreement for the space could not be met and the building was put for sale. The sale is just one of an increasing number of high-priced deals on Design District real estate which as seen Redsky Capital and JZ Capital Partners invested over $233 million in Design District, Harbor Group International purchased a retail building for $21.5 million located at 111 Northeast 40th Street at $2,445 SF, and David Edelstein and partners purchased 140 NE 40th Street for $10 million at $3,704 SF.