Last I checked Dr. Greenthumb was out of stock. Don't think Rusty has offered it as an S1. Currently in stock at CSI.
Just got my first order from CSI yesterday ('79 Xmas Bud IBL) and received 20 freebie seeds from three different offerings. Thrilled to have gotten PCK IBL among them.
NDN's 79 X-Mas Bud was some pot that was smuggled by boat from Jamaica to FL. At least that was the story he told me and others.Originated from NDNguy. Good deal of folklore surrounding the line. I am not sure actual lineage is truly known - I know I am in no position to speak on it. But it's supposed to contain heavy pine terps. That's why I grabbed it (and a soft spot for IBLs). Had been watching stock for some time and when it dropped to 3 packs I knew it was time to swoop. Two days later showed no more stock. I see now they're back in (9 packs).
I plan to do a hunt for heavy pine terps, most likely starting next fall. So will be popping some of these (pack was 21 seeds), PTK and probably Romulan. I may look around before then to find one more that's supposed to be really heavy on the pine.