Once we had a system where people sold you things and it was all very clear, then the Americans gave us "Marketing" whereby you were economical with the truth and used such words as "up to" or "from" where you could put any silly price or offer there but legally didn't have to actually supply it. Perhaps the best ever was the really cheap Aer Lingus Dublin return where it transpired they had "one seat" at that price to make it "legal".
Sigh, the best is of course Broadband, hardly anyone really understands it, and everyone thinks they are getting what they are not! (I recently published an article explaining exactly what you really get --- expecting the hit squad any day -- heyyyy! "Good honest broadband from Yorkshire" --- look who really owns that Company --- well Ill be dammned --- BT!)
I do exactly the same, I know what wine I want, and I wait and watch it go up --- then down on "offer" and that is the only time I buy it.
Just in case you don't know --- best place to buy a lot of things, particularly expensive items like new televisions, is John Lewis as not only do they price match but on many items you get a full 5 year Warranty underwritten by John Lewis, so take the price form xxxx them see what extra they will charge you on extended warranty, and if Lewis sell it -- overall it will be much less! (I'm not that clever -- my neighbour told me about it!)
I do get annoyed at deceptive pricing, it is yet more of the "what we will say is" dishonesty of our times! We confuse barely legal with honest!
Arthur Daley