I can see it as that.Most card shops where i live.If it's a sub set rookie.They tell me it's not a "rookie card".I guess it's all in how you look at stuff.Just like a price guide is just a guide.That's why i ask some times "What's it worth to you" on prices of some card.I have a Bob Griese/Y.A. Tittle and Fran Tarkenton triple auto #5/10 and the don't price cards that low numbered in the books.People are always asking how much and I give them that reply.It matters what they will give.
Thats exactly how I feel and tell people about the value of a card.It may book for such and such,and it might worth x amount to you but it all boils down to what someone is willing to pay.