If she is flying through T3 at Heathrow ask her to shop there. The taxfree price of the 90X90 is £195 if I remember correctly. The UK is in general one of the best places to buy H.
Sorry forgot to mention I am looking for B or K or Lindy.
I replied you in another thread: http://forum.purseblog.com/hermes/any-hermes-fans-in-abu-dhabi-or-dubai-627066.html#post20409931