Sometimes I am useless

So I go shopping, and find things I think are perfect for people:

Rjk: one card, identical to the one Vicky bought, a book he already had and a CD which he didn't.
Mike: card was at least unique, and the DVDs were ones he didn't have, but the CD was one he already has.

Oh well, I'll swap rjk's book for something else, and Mike says just keep the CD :-)