And that seems to be the part you're missing. Samsung hasn't announced a price. I don't think the prices you're seeing are ones they're setting.

*edit*
Oh, and using Apple as the primary example? That just doesn't work. They're selling their own products in their own stores, so of course they set the prices (yes, I know you can buy Apple products elsewhere, but who is going to buy an iPad at Best Buy if it's $50 more?).

We're talking about a company (Samsung) which, like most companies, puts out the product with an MSRP, and the stores that sell them can decide what price they want to put on it.