There is a guy who runs a shop called HeavyArm (as mentioned in the description).
I found him on twitter as he regularly calls out games he has.
If you e-mail him your enquiry, he will set up an order for you, including shipping prices and give you an invoice.
From what I gather, I got that game, Soul Sacrifice Delta and A Uniwara Kawase Vita game. He also gave me a Mini USB PS+ shaped cord for free!
He also sold Oreshika Tainted Bloodlines in English for awhile (mine came from Play-Asia which has a typo).
I think the website looks dodgy (HeavyArm) but the guy himself is legit.
If you can contact him directly he is always willing to help but his English can be hard to understand.
I actually bought 3D Dot Heroes for £5 and sold it the same price after getting stuck.
I own Yakuza 6's Art of Essence too but seen it go for less on some UK websites.
The best deal I ever got was Fire Emblem: Path of Radience for £5.96 via Amazon UK's Pricing Error. Same for Beat the Beat: Rhythm Paradise.