What a coincidence - I recently fell in love with Route du Vetiver myself. Most vetivers had mildly interested me, but RdV just really swept me off my feet. Can't say enough.
Yes, its pricey so thats why its not in my wardrobe. Other scents that I think compare are just as pricey (Rose Poivree by The Different Company, Voleur de Roses by L'Artisan Parfumeur...) However there is another one that is more affordable: Midnight Violet by Ava Luxe. I know, it sounds 'cheesy' (I hate the name), but the scent is just as good as RdV, although it is a different 'theme' (violets, not vetiver) executed in the same style.
You can buy a sample from AL on their website. Try it - I think you might like!