Im not sure if it's the same kind of ping that I have. What color are the flowers?
It does work, I received baby Heliamphora from Lloyd this way along with some Drosera.If you buy some plastic petri dishes from AliExpress, you can send plant material in a bubble wrap, very securely.
My pings are quite happy and have really coloured up. I will need to separate them soon and find more room for growing