Three Boeing 747 freighter aircraft that have been seized and stored in Shanghai and Shenzhen are currently on offer on Chinese eBay TaoBao. Chinese Jade Cargo International went bankrupt in September 2013, the cargo planes were seized by a court and the latter is now selling them on TaoBao. One of them is registered B-2423. It’s unsure that they will get sold: the current bid is 135,038,600 Yuan or €17,000,000.
You can bid via https://susong.taobao.com/auction/558889890385.htm?pk= (Google Translate required)
Update 21 November 2017: 2 Boeing 747 cargo jets were sold for ¥322 million (48.6 million USD) via an online auction.