Gumba has been debated and heavily sketchy at the moment. Don't trust what he sais on any markets or communication until he starts following through. If he's so backed up on order, why doesn't he stop taking order, get caught up, and then sell again? The fact he's still taking order after all of this is definitely suspicious.
Damn, Gumba was one of my favorites. He was a very dependable, professional vendors for a long time. I loved how he had such a diverse selection because it meant I had a reliable source for just about everything I needed. His prices weren't the best but it was worth it for the convenience and reliability.