Originally Posted by
RichardInSF
Here's a place that claims to sell you the one day zone 1-5 Paris RATP pass, which will include the round trip to/from the airport as well as unlimited metro and even the roundtrip to Versailles, for $25US (plus $12 shipping!):
http://www.gotoparis.net/visite.html
Thanks for the link.....^ There's some good info there. I will probably look into using that website to order a 1-day or 3-day pass from there after I do a bit more research (you can tell by my original question that I've done no research yet, but the trip is still a couple months away luckily).