Snapped Avant aerial base. Any replacements?

[Animal Mother]

Tried to unscrew my beesting aerial (S6) but the upper part of the base snapped .

I'm ok with how to remove the base for replacement (nut inside rear interior light etc) but I'm not sure what to replace it with or where to get a suitable aerial from.

I don't mind if I replace it with a beesting or fin aerial.

[Acidburn]

fin style from vagparts

bee sting from any other audi with one thats similar, afaik they are the same style and easy enough to remove.

[s2driveruk]

oem replacements are bloody expensive though....£68 i was quoted 2yrs back. You can use one from a vauxhaul Vectra though the mast stands upright slightly more, for £13 i decided i wasnt that bothered

[M_GORDON]

I bought an electronic antena, look like the BMW´s

Just like this