Katranji (ekt2)'s site is indeed useless. There's no sense trying to do anything on that site.
Your best bet is to call them up and check if they have Arduino in stock. Mind you, their prices are high, but just not too High. In fact, we have a user here that works for Katranji who was able to
reduce the price of the Arduino Uno to 16$.
P.S. He's here as a LebGeeks member not as a Katranji employee, so we should not badger him about Katranji.
My advice to you, before you go ahead and buy Arduino, is to plan what you want to do/learn and then based on that, create a new LebGeeks topic with details so that we (ehem... we? haha) may assist you further.
