We reported that the PlayStation Network was selling Metal Gear Solid V: Ground Zeroes for less than online retailers. This trend appears to have caught on, with an even heavier discount appearing on several online retailers.
Amazon, Game and Zavvi have all dropped the price across all platforms to £19.99.
This drops it into line with the PS3 version as it is priced on the PSN. The PSN still has the PS4 version at £24.99.