I got mine from http://pureflorida.blogspot.ca/p/freshly-harvested-datil-pepper-seeds.html a couple years ago. They germinated really well and all grew true.
Yup looks like you are one of the lucky few. I bought seeds from ebay, though I found out the guy was fairly local to me. They all turned out to be true. Just a big risk to take IMO. I wouldn't do it again.