also which kindle?
did you want the ones with special offers? these cost generally 30bucks less and DO NOT hamper the reading experience, the ads only appear when you turnoff/sleep the kindle
the cheapest kindle is 80bucks with ads,
No touch
No keyboard
you would use a cursor to enter in text, like you would with a xbox 360 or psp
and there is no 3G option
the kindle touch is 99bucks you would touch the screen, but i have heard that the touch screen is a bit worse for viewing than without, being that you have to place another layer of material on top of the kindle screen to recognize touch, the quality is a bit less even than the basic kindle (but still great)
3G i think is 150
then they have the kindle keyboard, basically the cheapest kindle with a physical keyboard i think it only comes 3G for 140
they all have wifi, so that is always there.
also i believe the kindle is tied to your amazon account, at least it is for the kindle i have (second gen), and this is obviously so that you can purchase books whenever you want easily, i do not know if this will be an issue. just giving you a heads up and previous owner experience (well more like fiance' experience since i bought it for her)