Correct!
Price point is the single most important thing... it's better for companies to lower the quantity of what you're getting rather than raise the price! Latest perfect example - Cadbury's chocolate - same price, but it's gone from 250g to 200g! It happens all the time!!
That is an EXCELLENT idea!
I can guarantee (having personally worked as an undercover security shopper in Melbourne), Bag-Checkers and even Security Guards cannot search your bags if you don't want them to! If they are rudely persistent, just ask them if they're implying that you've stolen something... watch what happens!Companies (and the actual employees themselves) can be sued for defamation/slander! The whole idea is not to catch you, but to scare you!