I have bought from them some years back, I did get charged customs duty which they refunded(but you have to sent photocopies of the charges).
Then their prices changed big time, I mean the prices they want for perfume brands is more than going into a bricks and mortar store in the UK and buying!!!! Total rip off. Their Serge Lutens is something like £15 more than buying a high end store.
If you live in the US or Australia they are good value but anywhere else no.