Hello there!
Unfortunately, as of yet, I am not aware of any THCV products. However, there are strains which have higher concentrations of THCV than others — Jack the Ripper and Durban Poison are the most commonly found strains with high THCV concentrations — other strains include Doug’s Varin, Pineapple Purps, Willie Nelson and Power Plant.
Here is a great article with more information regarding THCV:
I hope this helps!
drkim