Complex sentence: The Bloch-Bauer Klimts, as the paintings came to be known, were eventually sold, with the Portrait of Adele Bloch-Bauer 1 being purchased by cosmetics heir, Ronald Lauder for $135 million US.
Split into simpler sentences: The Bloch-Bauer Klimts, as the paintings came to be known, were all eventually sold. The Portrait of Adele Bloch-Bauer 1 was purchased by cosmetics heir, Ronald Lauder for $135 million US.