Exactly the same for me (people just won't believe it lol), except I didn't have a magic zhen. Still, thumbs up for utilising the stupidity of others to make rps, great move.
depending on the damage drop at the zhen I'd say a 2.0 zhen with 65+ dd would be around 30k rps if not more (if DD and + is high).
I'm too lazy to find a picture of one, or summarise all the stats, I'll just give you what I know by heart (might miss a thing)
Unique upg zhen 2.0:
110 str
110 vit
40% attackspeed
8% hp abso
12% crit
110% hp
56% melee
Average 65% dd