I've seen seed pop up on Ebay fairly regularly. Not certain how much control they exercise over pollenation, tho.

For the record, some individual sellers on Ebay I've found far more knowledgeable about passiflora than some so-called professional nurseries. And then there are others who are of questionable competence at best.

desertmickey,
I may already own one, and will be ablle to take cuttings soon. I am new to their care, and even have someone here helping me with them. Mine died back (yes, in zone 10) this past winter because we got a freeze-snap. But it is beginning to come back up. I'll look for a picture of it and email it to you, i took pictures of it in bloom last year, but now it's buried in a file somewhere.
my email is: ginodiavonti@gmail.com (my hubbies)
If it is the racemosa, i'll start you a cutting in a week or so, (she's still kind of small)