Boots are selling their fragrance gift sets at the same price as just the perfume on its own!
Eg. Kylie Darling gift set containing 30ml eau de toilette PLUS 150ml body lotion is £19.50
Kylie Darling 30ml eau de toilette by itself is also £19.50!
(Kylie Darling 200ml body lotion (OK it's a bit bigger) is £12.50)
So if you are buying perfume from Boots, check the gift sets too, as you might be able to get something extra for your money!
Just checked a few others & looks like you mostly get something extra in the gift set for the same price.