The different prices are due to our daily prices. We adjust the prices on an ongoing basis in order to maximise availability; different suppliers have different costs. If a customer buys an item at price X on day Y and later returns it, this original purchase price X always applies when the item is resold. The price on the day of the return is irrelevant.
The version you have seen is the DE version and comes with an EU plug format (type F). This only works in Switzerland with an adapter, which is not a problem electrically, but is less stable mechanically and is rather impractical in everyday life. I would therefore clearly recommend the CH version of the Devolo Magic 2 WiFi 6 next Multiroom Kit. This has the appropriate Swiss plug and works without any restrictions.
The difference between the "(DE)" variant and the non-DE variant of the "Magic 2 WiFi 6 Multiroom Kit" could be due to regional adaptations, such as plug types or language settings. The higher pricing and more reviews of the non-DE variant could be due to greater market penetration or specific regional requirements. Unfortunately, there is no specific information on why the non-DE variant is more expensive or has more reviews. It might be helpful to contact the manufacturer or a local dealer directly to get exact details.
I have carried out exactly this upgrade.
Reception has improved for the individual devices in the house. The speed is about the same (tendez better) than before. Of course, the situation on site is decisive here (electrical installation, devices, etc.).
It will be enough for the TV in any case, probably also for your office. The 2400Mbits/s are rarely reached. With short direct power lines, it may be close. But even in the office, there will probably be enough speed to be able to play online games smoothly. I am satisfied with it. It is easy to install and you can change the location at any time. The adapters should always be directly in a socket, not via multiple distributors. The WLAN transmission rate is higher with the Wifi-6 kit. It's up to each person to decide whether the extra charge is worth it. I don't need it.
I searched the manual for the device but could not find any mention of peer-to-peer isolation. Devolo customer service may be able to tell you more about this: https://www.devolo.ch/support
Alternatively, you can of course ask us in customer service where we could investigate this better: https://helpcenter.digitec.ch/hc/de/requests/new
I bought this product a few weeks ago. It is indeed the Next. This is a translation problem. The "Next" has been translated in the text as "Le prochain".