A beautiful Mariano Fortuny gown is available on eBay at the moment:
If that's not quite in your budget, you can always peruse some lovely modern Fortuny items at the Venetia Studium online shop ( I had trouble with these sites in Google Chrome), including bags, scarves, shawls, pinsand jewel purses. Sadly dresses can only be purchased in the shops. Fortuny also now has a flagship fabric store in New York, if you like to make your own creations.
While working in the Symbolist and Nouveau period, Fortuny's designs embrace a love a craftsmanship and handwork prized by the Pre-Raphaelites. His loose gowns, hand-dyed, hand-printed or painted fabrics and love of times past and Eastern art would have pleased any fan of Aesthetic Dress.