A number of sites are reporting that a second public sale of IPv4 addresses is occurring via bankruptcy court. This time a /16 from Borders Books is being sold to Cerner for $12 per IPv4 address.
Borders Sells 65k IPv4 Addresses for $12 Each
http://www.theregister.co.uk/2011/12/05/borders_flogs_ipv4_addys/