Download latest PS database: mediafire_link OR ziddu_link
You will obviously need to follow the steps here to edit the database: Customize your own PS shop
To make things easier for you guys, Just download the file above to purchase the mystery box items. This HELPS you save the coins that you spend on those boxes getting crap items :p
Just replace the old database with the above file. Use the 'ShopLuxury-latest.xml.dat' , meaning you're replacing your Luxury shop with my database.
Most of you should know what to do, this database loophole has been out for a long time.
And DO NOT give out your password to anyone. I will NEVER ask you for your passwords and account ID.