The pricing varies depending on the country you're in, it might be related to your location.

This is the info I have related to pricing differences
 
Adobe decides the price at which it sells its product on the Adobe Store.  A number of factors influence our regional pricing including local market conditions and the cost of doing business in that region.  Please note that resellers are free to decide at which price they sell Adobe products, which can be less than the price on the Adobe Store.
 
We establish our prices for Creative Suite products in U.S. dollars, Euros, Yen, British Pound and Australian dollars on a regional basis using a consistent methodology. Local market conditions significantly influence our pricing – these include the costs of doing business in different regions and customer research that assesses the value of the product in the local market.

We conduct the majority of our business through our retail and licensing channels. We depend on our retail partners in local markets to help us reach as many customers as possible, support those customers, and much more.

As stated, the cost of doing business in the rest of the world is higher than in North America. That higher cost is reflected in some of our pricing and would remain no matter how customers chose to purchase. For example, customers will still read about our products through local press to whom we reach out; they will meet local Adobe sales people who conduct seminars, participate in user groups, and visit large customers; and they will rely on support resources that Adobe makes available in these markets. All of these efforts impact the business costs of securing the sale, whether that sale is delivered online or in a box.

-Dave