Question about SteelSeries Arctis 7 Wireless

This product can be purchased from three different retailers at https://www.digitec.ch.
for Fr 191.95 from Conrad.ch https://www.digitec.ch/de/s1/product/steelseries-arctis-7-wireless-gaming-headset-9891494?supplier=4867603
for Fr 251.01 from "das Warenhaus" https://www.digitec.ch/de/s1/product/steelseries-arctis-7-wireless-gaming-headset-9891494?supplier=3204073
for Fr 158.00 from Digitec SteelSeries Arctis 7 Wireless