There are many Foot Pegs out there now.  Please be aware that some of the cheaper ones are made of Steel, this means they will rust.  Also there are kinds out there that are made for Scooters and are not intended to be used on Sport Bikes.

Stunters should especially avoid these parts due the added stress they put on these parts.  The last thing you need is a Foot Peg braking while doing a standup Wheelie.

It's not always better to buy something really cheap, buy quality and it will last you for a longer time.  You won't have to make a 2nd purchase if you buy the right part to begin with.