I know what you mean about finding them. I grow them and Sante Fe Grande, very mild and good munching on while drinking beer. I got mine during a trade and they were Ferre Morse Seeds as she sent the package and all. Looked for them at my local stores and gave up and ordered off of ebay. Now I did see them at Home Depot website, However they did not have them in the store I was at. I was skeptical about ebay, being true to name. Hope it works out. Good luck!

You can get them at peppergal.com!Their seeds are top notch and have germinated very well for me.

Thank you,
Couldn't find them on the peppergal site. She only had the Cascabels which are completely different. I did find some on Ebay as did orbrionusa.

Ahh my bad.Try summerstonenursery.com.

I grew some wenks yellow hots last year and couldnt tell much difference between the two. I forgot about them until I opened up my pepper stash. The wenks come from peppergal and her shipping is much more reasonable than others. I can put some in the mailbox if you want to try them. I could also send you a few of the cascebella and sante fe grande when they come in from the ebay vendor.

I have some (not many) if your sources don't work out.

I bought a packet at Home Depot, Ferry Morse brand.

http://www.reimerseeds.com/cascabella-hot-peppers.aspx

don't have any experience with this seed seller yet but it looks like they have quite a selection.

No personal experience with Reimer's but I've heard lots of bad things about them.

Trades Winds Fruit site shows to have Cascabella seeds.
I've never ordered from them.