ethomaz on 16 July 2013
The best article about self-publishing.
http://www.gamasutra.com/view/news/196253/When_selfpublishing_on_PlayStation_4_heres_what_to_expect.php
The DevKit is not that expensive I guess... the prices will be close to the PS3 DevKit.
Launch: $20,000
2008: $10,000
2009: $2,000