Hello,
Prices are set according to supply and demand, but also depend on suppliers and the availability of goods.
The price of a product can also vary on a daily basis. This is why a 'Price trend' tool is available on the page for each item, giving you a better idea of these fluctuations over the last few months. Note that by adding an item to a wish list, you will automatically be notified by e-mail of any price reductions.