You can get a designers perfume from a departmental store, even for free if you are lucky one, by asking for a sample. Sample perfumes are for free as the manufacturers always give samples in the market for making promotions of their products.
Try to get knowledge about the promotional campaigns of different departmental stores that offer discounted prices on all products including designer perfumes on specific days.
You can also buy designer perfumes by visiting duty free shops. You can find these duty free shops at the airport of your city as almost all major airports have duty free shops.
Always look for the auctions of departmental stores or boutiques, which are closing down or are moving to a new place, as they offer a discounted rate on all products including designer perfumes.
Making friendship with employees at a departmental store is another way to get designer perfumes on discounted rates because the employees usually get discounts on all products. Ask your friend at a departmental store to buy you a designer perfume on a discounted price.
While purchasing a designer perfume from an auction on internet, then you need to make sure that the online vender is reliable one like eBay because many scams out there on internet who sell fake products.