No you're wrong... wrong wrong wrong.
IF TV's suddenly dropped to the price that they cost to manufacture, how many TV's would you buy? I don't know how cheap they actually are, but I'm assuming a large price drop say a previously 300 dollar HD Tv would now be something 20-50 dollars. They'd be gone in a second. So even people who wanted a TV would not be able to get one because people would buy 4-5 TV's where they only need one because they are so, comparatively, cheap. This is a shortage, where, at a certain price, there isn't enough quantity supplied to meet quantity demanded. Same goes for just about everything. The reason the prices are higher than the costs is to ensure anyone who wants to buy something (at a certain price) can, not just those who get to the store fastest.
Yes, of course, if given the option, consumers will always want the smallest price. IS it the manufacturers job to do this? Consumers want to pay nothing for everything, so if manufacturers did this... we wouldn't have manufacturers. Its very simple actually, even a simple course in micro-economics would be incredibly enlightening for you I think. The fact is, your demand for groceries is relatively inelastic (That is you can only buy so little groceries, so if the price raises you just have to shell out more money), however it is not PERFECTLY elastic (something doesn't really happen). If milk starts costing 100 dollars, bread 50 bucks, poptarts 20 dollars a smack, and bottled water 70 dollars, you're going to change your eating habits. IF your demand was inelastic you wouldn't... you couldn't. But you can, and if a grocery store/chain did this they'd quickly be undercut, and in fact most stores are undercutting these prices I listed, so such a supermarket wouldn't even get its feet on the ground.
And isn't an "artificial scarcity" good in some cases (namely environmental)? What if we just got all the oil out of the ground and with this increased supply sold it at a price where all of it could be sold (namely a much lower prices than we have now)? People would stop being careful with their gas and start buying hummers, suv's, and trucks again. Part of the reason behind "artificial scarcity" (your word, not mine) is conservation of resources.