no shop is more transparent than digitec I'm not a shill I write many comments that I'm sure some people at digitec "appreciate moderately" lol
but you can't say it's not transparent and has the best service, there is a price trend history on every item and if you see the price suddenly go up then just wait hoping for it to go down, make sure to open the item page and see if the supplier is actually digitec, when out of stock (I guess ?) they might offer an external supplier which most of the time have higher prices (and slower delivery times too)

The price is determined by various influences, such as the purchasing conditions specified by the supplier.