For what it's worth, ZoomHash is still at $325 + shipping. They accept PayPal and Credit Cards. They claim 5 days shipping in the USA.
Alas this is not be. I got an E-mail from Zoom Hash less than 48 hours later saying that they had to cancel the order. So my "S5 for $348 shipped to Minnesota, paid with Discover" turned into a flop. They are crediting the money back. Bummer.......

My shipment was canceled too. Even with a simple excel sheet I would be faster than 3 days to know what I have in Stock or not... Speechless...

This is from 2 pages back, but another thing to keep in mind about Zoomhash, (and others? How many or which I am not sure but I know Zoomhash) is they are supposed to handle the warranty claims according to Yoshi.I do not know the qualifying factors but I am sure if they are supposed to handle warranty they get a better discount.
Yoshi said Bitmain would handle my case but that is a whole different story which I will update in a bit.
Just keep in mind where your warranty is being handled, the people you will be dealing with, where they are, and (if you will have failures) where is the most likely point of failure. Of course how long is the warranty and what is the warranty reputation from existing users who your use will emulate. There is nothing wrong with learning by copying the best and back on topic sincerely research the service experience of others.
To add to this... Bitmain will NOT warranty a device that was not purchased directly from Bitmain or an authorized reseller (but they won't provide a list of authorized resellers, as far as I can see). This policy is not made clear anywhere that I have seen, but Bitmain expects retail vendors (re-sellers) to take returns and then pursue warranty service with the re-seller rather than individual buyers. Also, Bitmain will tell you to do a credit card chargeback if the vendor will not handle an RMA for you, regardless of whether or not they ever claimed they would.