@ConcreteBob is definitely legit to deal with when buying or selling, I can vouch for that. He actually sent me his old Dark Horse RDA, complete with box, all attachments, and bag of parts (yes, even the damn blue screwdriver, lol). He actually did this completely free, and covered shipping out of his own pocket, just because he knew I was getting more into dripping. That shows that if dealing with him in a buy or sell transaction, you know he will be trust-worthy without a doubt. Oh, and as a bonus, he even sent me some wire he twisted!