As for the price, have you considered buying one of the 15ml travel sprays? I picked one up on eBay for about $50, which was a bit pricey, but certainly the cheapest way to get any.
I can't say I know anything just like the floral/vanilla of Vanille Galante. Ava Luxe Tao is a musky, light vanilla and the extrait lasts a very long time. Again, not like VG but a floral vanilla, Helmut Lang EdC and EdP are good.