Game prices!

1

my uncle wanted me to create a game for them to be used online using flash. Problem is, i have no idea how much to charge them since i’m a newly graduate. Is there any standard price on this? by the way, the games are the typical ones that are usually on the internet like running cars swimming divers that get trapped by giant squids, puzzles etc. it involves so much animation to please the eye but the programming is equally tough. every reply is most appreciated!