I think your odds of getting 'pure isolated' seeds for free is unlikely. As a seed seller/grower, you gotta know how much effort goes into that process. Time = money. Your best bet is to buy stuff either commercial from reliable source & isolate in 2012 for future years or buy seed from Ajijoe / other places and isolate yourself when you see the attributes you want from the plant.
Just curious. Why can't you sell Black Pearl? It's everywhere at nurseries here.
Chris