Aji Amarillo Plants LA area?
Would you be willing to order the seedlings on-line? The Chile Woman - http://thechilewoman.com - has them. I've ordered chiles (not aji, tho'), tomatoes and tomatillo plants from her and they all arrived healthy, in good condition and are now thriving. She's in Indiana, but it only took 4-days for them to get to San Diego once they shipped.
It's not exactly the instantaneous gratification in getting them locally, but it is a verified source.