AsNoriuanswered grow question 9d ago I saw few banks which says they sell pollen, but i doubt it works. Heard you can freeze it , but it is still very fragile. About nitrogen i dont speak even ...
So even if they took moisture away, frozen them, how they will deliver frozen through mail ???
Plus price was 100 pounds or more ...
You can reveg / moster crop plant after flowering and then play with it further, like reversing for self polination. I presume you want to harvest first ;)