Mine got "removed " by some scum, I replaced them with the now quite rare real alloy audi jobies as the blue plastic ones i had laying around just didnt look the part. But unless you are very sure about where you park the car... they may well be removed,
I would tread carefully with ebay items... as mine came up for sale on there , If the unfortunate ex owner of them see's them on your car with a tell tail mark they recognise ... may get removed ...
In short, If its not something you realy WANT i wouldnt bother,