Hi there,
I'm very satisfied with their products, I already have ordered twice in a couple of months.
But with my last order I had some problems with the cartridges, which had a bad screw thread so they didn't fit on the several V2
batteries I have.
Just 1 chat with their online customer service this morning was enough to find a simple solution.
They offered to replace them all or to make me a credit for my next order.
That's how it has to be for a profesional online seller, and all without any discusions or questions.
I'll buy from them next time again without hesitate.
Defects can happen with any product and with any firm who sells products.
With a good customer service and just asking and telling what happened for every complaining customer one can find a solution.