Hmm last year right before the lockdown, I ordered a pair of Psvane ACME 300b tubes from them. And yes, it was a gamble to save some money by buying from them vs Grant Fidelity, but lucky for me, I got my tubes in a reasonable amount of time and the tubes have been rock solid. In fact, in my Cayin HA-300 tube amp (bought from New York-based Musicteck), 10/10 times I prefer the headphone output from it vs my Chord HUGO TT2's own headphone amp because of the more beautiful tonality, much larger soundstage, air, and transient.
So yeah, going back to the point, I was happy with them for my purchase.