Thanks for the replies.
I do not want to make any money off of my guppy fry, as fish aren't really popular around my area.
The pet store has a baby guppy tank and I did see some that were extremely tiny. I know the owners of the store and I know for a fact that all of the guppies are seperated(Male, female) from birth, so I know they aren't breeding them at the store.
I was talking to an employee at the store, and they can take the fry, I will get nothing for them(and I don't want anything for them) and that employee didn't know the age the guppies would need to be.
Thanks for the suggestions,
Parrotlover