Argos have kicked off their PlayStation Vita promotion touted earlier this week, which will last until Tuesday 22nd. £139.99 gets you the all-singing, all-dancing 3G-enabled version of Sony's handheld, along with the excellent Killzone: Mercenary, Virtua Tennis 4 and an 8GB memory card. Be sure to select option 3.
Other alternatives are available through the link, but this is pretty special if you're in the market for the top-flight Vita model. The £170 option is also rather tasty.
Credit to csi_guy @ HUKD, who was quick to foreshadow this deal on Wednesday.