Actually nevermind what I said. I totally forgot that TI calc packages requires a chainsaw to be opened (although they're much easier to open than they used to be in 2001-02).
I did see stuff like that happen in some stores, though. Zellers stores are particularly bad about that. When I went to their printing furnitures section about 70% of the ink cartridges packages either had holes in them or were opened, and some other items are in terrible condition (especially books). And in other stores, I remember buying an item that was opened and it was one of the last in stock so I just said to the cashier that there were no other left when she asked.