This was £18.59 I believe a few days ago from Base, I believe they have dropped the price just recently. Currently the cheapest available. CeX sells £18 a second hand copy. Also, if you are a digital fan it is currently £14.99 on PSN
however for the sake of a £1 I'd personally go with the physical copy. :)
Seven delinquents, seven sins, and only one way out. Just hired for a new, mysterious job, you soon discover that this isn't your normal prison gig. You've been entrusted with the care of a crew of girls whose sins have damned their souls to Hell and an eternity of punishment... Their only hope of salvation is for you to recognize their unique histories, and to guide them along the path to redemption. Navigate through the four trials of the Redemption Program, and motivate your crew of delinquents to learn the skills to redeem themselves.
• More than 15 main characters to get to know as the story unfolds in visual novel style. From a timid lad who hides an intense hatred within to a crude war goddess who's never seen the earth below, characters will meet, forge relationships and alliances, and get pushed to their limits in the quest to free themselves from the Divine Empire.
• Strategic turn-based gameplay will challenge the most battle-hardened generals with itscombat. Use your allies, and even giant creatures, to help turn the tide in battle.
• Joint Attacks, Consecutive Strikes, and Boost Magic mechanics add extra depth to the strategy gameplay and make for more variety.
• More than 80 hours of battle and adventure await, all with the original Japanese dialogue audio and English text.Please note the game is rated Mature.