K-Cup billionaire sells Palm Beach waterfront mansion for just over $66M after steep price cut K-Cup billionaire Robert Stiller sold his Palm Beach mansion for $66.14 million after buying it for $66 million in 2023, missing $90 million target. Original Source: https://www.foxbusiness.com/real-estate/k-cup-billionaire-sells-palm-beach-waterfront-mansion-just-over-66m-after-steep-price-cut