Existing Stock Item Increasing over 40% in Price!

I have been collecting items for my daughter's upcoming 5th birthday. I went into the Ballito Toys R Us earlier this week looking for Shopkins Baskets. They were re-arranging stock and updating price displays. <br> They had the Shopkins in stock, and had just opened a new carton. The display price was R34.95. I returned today to buy some today and despite the display price still being R34.95, I was told they would now cost R49.95 each! The same item, the same carton, R15 more, each! <br> What reason could you have for raising the price of an item by over 40%, when the cost of that item had not changed? It is disgusting business practice, and if it isn't **********, it should be!