Thanks Koo, and Jonzobot.  
I have not been buying anything zen.  I have never owned any either.

Though I do wonder occassionaly whether I should be in Zenith and not Resverlogix.  The royalty Zenith will charge Resverlogix right off the top is outrageous, and probably represents a far bigger cut of net profits than Resverlogix would retain for itself after all its costs to develop and its ongoing costs to manufacture, promote and distribute the product.  Zenith's fat royalty looks like 'easy money for next to nothing'.   Who knows, I might do some switching some day so that's why I wanted to know which brokers accomodate the purchase of Zenith ( zhclf ).  I thought I read here that only certain brokers would assist with its purchase.

Thanks for the clarifications.