Go for the Lidl one. More powerful and about the same price.
You can buy it now for £45, as the code was only valid until midnight. Still decent for the price, but max pressure may be too low for some.
Could try unplug the supply hose then turn on the pressure washer. That should pump out the water left inside the system. This one has very low flow rate so I wouldn't expect too much power from it.
Code isn’t valid 😔
That code is no longer valid