Hello. Is this the same grill that is available at Bauhaus for Fr. 549.-? https://www.bauhaus.ch/de/weber-gasgrill-spirit-e-310-black-classic-66783303 Or at Fust for Fr. 699? https://www.fust.ch/de/p/kuechengeraete/weber-entdecke-was-moeglich-ist/weber-gasgrills/weber/spirit-e-310-classic-8361550.html How do you explain these huge price differences?