Warren Buffett's son, musician Peter Buffett, had optimal timing when he listed his One Madison Park 3BR in spring 2012. The building had just announced that it was coming back to life, but Buffett didn't yet need to compete with fresh listings. He sold the place quickly, for $4.25 million. His buyer, one Tim Madison LLC, might not be so lucky. The apartment has popped back onto the market for $5.95 million?.just in time to compete with all the new listings in the relaunched building. Good luck, buddy!