In a effort to increase Vita sales, a number of games were discounted on the European PSN. However it would seem Inside Playstation Vita members are receiving an additional discount. This discount lowers the price of Unit 13 another 5 pounds, which makes it a mere £14.99 ($23). To get in on this deal, simply open your email and enter the PSN code listed.
If you’re still on the fence about Unit 13, feel free to check out review for more information.