• What: Serious Sam 3: BFE
• Where: Amazon US
• Current Price: £6.21
• Serious Sam 3: BFE Price Comparison
• Serious Sam 3: BFE Review

Undercutting GetGames' price, Amazon US is currently listing a digital download for Serious Sam 3: BFE at £9.99, which translates roughly to £6.21. All you need to do to order from Amazon US is to attach a US billing address onto your UK account. Do be aware, though, that some card issuers may charge a small (£1 or so) fee.

Additionally, Serious Sam 3: BFE is awesome! Seriously! Nice spot by darrenanderton1982.

Thanks to djmetsandy at HotUKDeals, who found this before I did.