How much cheaper is duty free perfume?

[Nospringflower]

Thinking about buying Viktor&Rolf Flowerbomb perfume - on offer (10% off) in House of Fraser for £81 for 2 days.

But, not sure if I should wait until going on holiday at the end of the month and buying it in duty free. Not sure how much difference it makes these days and if you get the same choice? Any advice gratefully received . Thanks.

You can do a search here. Put in the airport and the fragrance and it will give you the price in the duty free shop.
Good luck.

It's supposed to be at least 20% cheaper than RRP as you're not paying VAT on it.

Thanks Corlan that sites really good. And it is 20% cheaper for mine.