Just like gas, water, and electricity, internet and television are not always included in the rent. So, check the extra costs before you rent a room, studio, or apartment. The price of internet and television are based on the prices of the supplier. The average costs are around 65 euros per house. So, more housemates mean lower costs. If there is no internet in your house, you have to arrange this by yourself. De Consumentenbond (original source) gives advice on how to arrange a subscription for internet and television.