While we are waiting a couple more days to pick up Playstation 3s or are already camping outside of Best Buy gamers in Japan are playing them. Tomorrow also marks the start of the Playstation online service with downloadable games. Up until now it was unclear just how much original games are going to cost, but Japan gives us a clue. Blast Factor, Sony’s answer to Geometry Wars, is being sold at the online Playstation store for 840 yen ($10). The game is 95 megabytes big, which is larger than the Xbox Live Marketplace titles. Also online and for free is a demo of Ridge Racer 7.