National Park memories

So I really want to buy my parents the Ken Burns National Parks DVDs for Christmas or something. The special is airing this week, and my dad is watching it pointing out all these places we've seen. He gets so excited about seeing places he took us growing up. Right now the DVDs are expensive. Like, I never spend that much money on one thing ever. Since I'm jobless and thrifty, I just don't do it. But I really want to buy this for my parents because they are good parents and I never do anything out of the ordinary for them. I mean, I'm not a bad daughter; I just think that I could surprise them for once. It would be my way of saying 'thank you for making it possible to see the country'. The DVDs do not compare to all the fun, well planned vacations we took, but it is something.