My apology's, It appears all the Avalon chips were on that UPS plane that crashed in Alabama. We however will ship out replacements as we get them in. Estimated 4-5 weeks
I doubt it, the most likely scenario is Avalon sold your chips to someone else for a last minute offer too good to refuse, probably from someone local. The chips are gone, Yufi is gone, your BTC is gone, Avalon don't need business from the west now the local market is booming. Just speculating, based on the flood of Chinese ads for Avalon chips that have suddenly started to appear.
Yifu is definently a f*$# boy, but isn't the more plausible scenario that a bunch of Chinese chip orders have already arrived because they don't have to deal with outgoing and incoming customs checks. AND that Yifu was being at least slightly dishonest/incompetent.