While I've never had a bad experience with SecretSales I don't think a lot of their products are genuine. I've received a couple of products that we're very bad quality - now if the were true designer products they would be a lot better. Plus I've found that with non-designer things (Lights, Decorations, etc) You can go onto Google and get the exact same product for a lot cheaper.
Be prepared for it to take a good few months for things to arrive as well - you pay £5 for delivery you'd think it would come a lot quicker but clearly not.
They used to be a really good website a couple of years back but now don't expect much.