http://stcloud.craigslist.org/pet/4595442783.html
Taken from the ad:
"I have a 5 yr old Ball python and a 16+ yr old Arizona Wandering Garter that have lived together since the ball python was 6 months old."
but then ...
"I am asking $200 for everything and that you have some knowledge of reptile care, not hard but I want someone to take them who will take care of them"
So knowledge of reptile care says that ball pythons and garter snakes most likely have different care requirements?!