Yes, the enema bag I found on the Walgreens site was a combination enema/douche bag "fountain" style ($11.99).
There was also a combination water bottle/enema/douche bag for $11.99. But that would be bad news for people like us who are doing cleansing processes -- because it's not open at the top and there is no way to clean it. (It's just an upside down water bottle with a hole at the bottom.) I guess it presupposes that you would only use water.
Of course, if you're like us and use herbal mixtures (or coffee) you've got to be able to clean the inside of the bag. So the open top "fountain" model is the way to go. I'm going to buy one soon, before they get even harder to find.