I dont want to be the damp squib here but I would only buy them for the track or offroad use.
Magnesium alloy whilst being very light and strong does have a shelf life of x amount of hours - they are not designed for longevity and a lot of race teams return them for recycling to ensure they do not end up on the public highway.
I dont know where you would stand if one failed on the road and you trashed your car.
I would go with Petes recommendation they only have one spoke less and will last a lot longer, particularly on British roads or try and source some older ones like Gambit has that may need a refurb