There are a lot of great vanilla fragrances out there under $150.
Mona di Orio Les Nombres d'Or Vanille (a little over $150)(vanilla, amber and tonka bean)
Jalaine Vanilla (perfume oil)(warm, rich and buttery)
L'Artisan Vanilia (discontinued)(powdery and woody)
Jo Malone Vanilla & Anise (spicy, floral vanilla)
Hermes Vanille Galante (floral, woody vanilla)
Parfums de Nicolai Vanille Tonka (Vanilla with a carnation note)
Givenchy Organza Indecence (spicy vanilla)
Chopard Casmir (sweet and warm)
Serge Lutens Un Bois Vanille (milky and woody)
L'Artisan Havana Vanille (sweet and creamy)
Aquolina Pink Sugar (cheap and fun)(caramel and vanilla)