ideas behind chess openings is a great book. i highly recommend that you get it.
Ideas behind chess opening-reuben fine

I totally disagree, I think those first two books are much better texts to learn and study from. The Seirwan book gives you the basic ideas. And FCO gives you more specific detail on lines.
Anyway, Fine's book is a classic that can be picked up in a used edition very cheaply I believe -- so there should be no real conflict $ wise. Fine's book is one I'll wager most chess players have studied at one point or another (including me), and everyone has a certain affection for the books they've used... but I think it's overrated compared to more contemporary books like the two you've named.
I am thinking of adding this book to my chess book shopping list. But i have to remove one book from my list. I have 2 books in my list for opening.
1. Winning chess opening by yasser
2. fundamental chess openings by gambit publication author van der sterren
Should i remove one of book from list and buy reuben fine book or keep this 2 book not add reuben fine book on list