Me too. I've received 15% discount cards the last 2-3 orders. Granted I've been a truly loyal customer as Nakamal@Home has been the only supplier I've been buying from, and Stone the only strain I've been ordering. I don't have the money to experiment, and Stone does what I want it to do (strong anti-anxiety yet a tangible cerebral effect), so no incentive to switch things up anyway.
On another note, I'm new to Kava and like I mentioned haven't had the opportunity to try different vendors, but I can't imagine ones like GHK being so distinguishably superior to merit its apparent popularity while a solid company like Nakamal is more tucked away in the forum corner. Not only are their strains high quality but the service is as well, with extremely speedy shipping/etc.