No, I wouldn't say Chanel No5 is the cheapest. Please don't buy cheap perfume- it's usually cheap for a reason, because it's bloody minging and the wearer usually smells like a skunk that's crawled out of the backside of another skunk.
If you're on a budget- why don't you buy miniatures of decent perfume?
Hey everybody, thanx for the suggestions - I've been out today and bought some Chanel No. 5 from Debenahms (it seems there is somewhat of a cartel on the price) so, plumped for Debenhams because they do a great free gift wrap too - and some of us men (me!) are useless at that!