Videogame sales failure

I've been awaiting the release of the game "Singularity" a first person shooter set in a crumbling island laboratory with time-travel bits; sounds like it could be good. So why just after release does a game that currently sits at 77 on Metacritic appear at no.38 in the charts? Well let's see - firstly it was released on the 25th of June on the same date as "Lego Harry Potter" and secondly it didn't get released. "Huh?" I hear you ask. Well it may have been released but on the Saturday (26th) no-one in Kidderminster had it in stock even Amazon directly currently has no stock.

As an addition no demo, nor video footage has been released to the Playstation Store (unlike Lego HP which had stuff up for the whole month) and it was released at the end of the month which means it's unlikely to feature a review in the print media before-hand.

Unless you already knew about I'd say from the general public's point of view it doesn't exist.
[Update 14/7 - I note it's now available in Game and Gamestation for £45. Amusing less than the current Amazon price, but still a fiver more than most releases]