Cost does not matter as much to me as ultimate performance. If I was concerned about cost, I would just buy OTC all the way and love it ! But I see cars with pop and sizzle, and since they are either new , or detailed, I have to buy the best products. Anyway, how often do I strip down... twice a year?:nixweiss So, it is cost effective ! All of it is....I estimate my "personal stash" to be about 5 years worth in polish .... less in LSP ! But I have a lot of product/s/, and its far too late to count costs... I have $ 800.00 or probably more in Polishers and pads is about as bad .... :xyxthumbs I have it bad ! I am lucky not to be in debt over this stuff.... My wife has taken to saying that highly polished cars are a "guy thing", And she know the UPS people by name now.... :rofl Thing is, even though I stress that the lowest quality wax over a good prep can rock, I know, in the long run, what you put in equals what you get out.... Sigh, ....I'm hooked :help: