I thinking about buying a zippo lighter.?

I am thinking of getting a zippo lighter for my dad's birthday.He occansaoinally smokes non additive ciggs.I also would like to get one for my self not that i smoke or anything but they look kick@ss.I will get it out of amazon.com but i read some reviews that say that zippos come unfueled.When I do get a zippo for my dad and I what should I buy along with it like fuel,flint etc.Bear in mind I can only pay 20 dollars max but I found a lighter for 10 a flint for 4 fuel for 5 is that a good deal?Oh and I read that some guys zippo lasted for 10 years or so.Are they worth it?