Is peeking a "blind box" considered as stealing? Or breaking of any precepts?

> Blind Box means you don't know which specific design from a series you might be receiving. > > The boxes and/or bags are sealed and we don't know which toy is inside them. > > It's kinda like buying trading cards, except you don't get pieces of cards, you get a cool toy. > > Lots of series even feature rare special designs. Imagine this scenario, I want a Spiderman toy from a blind box set. There are 3 ways I can do. 1. Buy a few until I get "Spiderman" 2. Go ebay or some other website to buy from someone else whom had bought and open those blind boxes. It will cost more. And if "Spiderman" happens to be the "rare special designs", it will probably cost a few times more. 3. Secretly open those boxes carefully in toy-r-us or some other shop and take a peek. If it's "Spiderman", I'll buy it. Else, I'll repeat step 3 until I find "Spiderman". My question is whether method 3 is considered as stealing or breaking of any precepts? Let's make an assumption that peeking the box doesn't spoil the packaging, and therefore other consumers will still want to buy it if they want to.