Roll cake and brownie

Today at the grocery store, when I was about to head for the till, I noticed on the refrigerated shelves they have some small boxes labeled as "brownies".  I bought one of those, and one of roll cake.

When I open them at home, the brownie is not a brownie.  It's just a slice of spongy chocolate cake with some hardened chocolate on top of it.  And the roll cake has been rolled with some butter based cream, rather than whipped cream.  Man, I felt cheated.