I would say about 50-100$ end user, depending on how much they want the domain. Trademark issues for sure, but from experience, as long as you don't take it into a torrent/rom style site, or do anything with the domain in an attempt to 'tarnish' the brand, the name is fine. Plenty of high profile videogame sites out there using trademarked names in their domains.
While Axs may have some valid points his view on domain usability is somewhat inaccurate. The domain isn't worthless as Method20 states there are many fan sites using trademarked names. According to a trademark attorney I spoke to before getting this name he told me as long as I advise the site isn't affiliated to the sony and playstation brands I will fine. He has won many cases where big corps sued people over use of a so called trademarked name as part of their domain. As fans and consumers of many products we as well as the companies have rights when it comes to trademarks and their use. Whoever develops this name will be best if they do a blog or ezine type site. That kind of site as long as it accurates depicts info about playstation and its brand will get no problem from sony. Method20 I figured that it would be worth about what you stated. Thanks for the opinions.