Ouch! I share your pain. At least the spoiler wasn't damaged.

My antenna's mast was stolen once, so I did a small market research about antenna replacements. The 2003 Corolla and some VW models use the same antenna model as the VX. Toyota offers the antenna base at $220 and the mast at $50. ;eekr; I bought the mast from VW at $37. If I remember correctly, the whole kit (base+mast) was about $130; I think Isuzu offers it for $150. Not sure whether the antenna cable will be long enough for the VX so check it before buying it.

(BTW, could I get the lower rubber piece from your broken antenna base when you replace it, pleeeease? I really could use it, so please let me know .)

Hope this helps, and thanks in advance.