Disposable lighters:

Depending on where in the world you live this first tupe will most likely be your most common, often the cheapest of all the options and quite often used as promotional material by a wide array of businesses. Most notable example that comes to mind would have to be the 'BIC' lighter.

As the tittle suggests these are disposable (one use) lighters, hence they are cheap, though in the case of the BIC lighter they can be extremely reliable. 

I couldnt begin to tell you how many times i have fully submerged a bic in my pocket whilst waterskiing, cooling off in a nearby mountain spring fed creek or just sipping beers on a local island watching the sunset. Although I may be without the ability to light my cigarette for the next 5-10 minutes rest assured with a bit of blowing to dry the flint and some running the wheel along some nearby tree or timber until a spark starts to come back and I am back in business.

Now these lighters most certainly serve a purpose however as any long time user of disposables can atest to, there are also the countless times when at some untimely hour your disposable lighter runs low on gas and shortly afterwards dies once and for all. Leaving you to get creative when trying to light your cigarettes for the rest of the night. Not to mention the amount of money spent over the years on lighters that will just be thrown away. This leaves one wanting a better solution and luckily there are plenty out there.