A Rolling Stones fan bought Mick Jagger’s former party pad, but it didn’t cost a song. The home traded hands for $7.3 million, according to Mansion Global . The subpenthouse apartment in an affluent corner of Central London housed Jagger — and his wild parties — during the Rolling Stones’ meteoric rise to stardom in the 1960s. Its new owner is “a young British guy in his 30s,” according to the brokerage, Beauchamp Estates, and a self-described Stones fan. The four-bedroom home listed for sale