600 euros is a lot of money. However, if you realise that you get two fully-fledged devices in one, it's not that expensive - especially as the price at the time of testing was "only" around 500 euros. In fact, users hardly have to make any compromises here. They get a fully-fledged Dyad Pro with the best rimless mopping function on the market and a good cordless vacuum cleaner overall...