Update: Game has offered Eurogamer an insight into pricing and how you'll receive the digital PS3 content.
Pricing depends on title. "Every product is individually displayed and marketed with a specific price point," a spokesperson for Game told us.
For example, the God of War Collection will cost £24.99, whereas the Killzone 3 Steel Rain Map pack will cost £3.99.
When you buy the content you'll receive a 12-digit code on either your receipt or via email or SMS text. It's this code you redeem online on PS3.
Original story: Game has signed a deal with Sony Europe to sell downloadable PS3 games, game add-ons and PS Plus subscriptions.
A cluster of 42 Game and Gamestation shops will begin selling Sony's digital PSN content from today.
By mid-September, Game expects all 620 UK stores (Game and Gamestation) to offer the "full range" of over 50 PS3 games.
To begin with, the games will be limited to Sony's first-party output. Games mentioned are MAG, God of War Collection and WipEout Fury. Game add-ons mentioned are the Killzone Steel Rain Map pack and the Uncharted 2 Siege Expansion pack.
In time, the selection will expand to third-party games.
Game noted that this deal sees it become "Europe's biggest retailer of digital games". The PSN digital content Game said will "eventually be extended to Europe".