You are smart for not doing the google thing..That could go bad very easily.
To answer your question, Pinky Paradise is the Go-To for cosplayers everywhere:
http://www.pinkyparadise.com/However I will give some very good advice BEFORE buying anything. Advice you are likely to get from any other person that would have posted first here lol
Regardless of if you wear contacts or glasses already, go to the eye doctor and tell them what you are doing. From what I've read from people that wear them on a fairly normal basis, they are not the same size as your normal contacts you would use to replace glasses. This means you have to make sure you know the info needed. I don't know the full details, but I'm sure this forum will help you a LOT:
http://www.cosplay.com/forumdisplay.php?f=82This forum has a lot of threads on contacts. More so on Pinky because that site advertises for them, so people there already know about them first. You can type in their name in the search part and read up on what others have said to get more information.