Short-term characteristics Offer trustworthy?

Hi, I just need a short-term license plate for an overpass. However, I don’t want to register the car immediately afterwards, but I want to wait in the garage. So I can’t take this out with my normal insurance. It just costs too much. That’s why I want to take out a short-term insurance online.http://…ekt-kurzzeitkenzeichen.de/…/…en-5-tage-versicherung-pkw Is this trustworthy? Does someone know a cheaper claim Ot?