the feeling i got was that they prefer only to sell in bulk to farms and these small 5,10,15 orders are a waste of their time. I asked about a discount on 10 and was told they would knock $150 off (of their already overpriced) shipping, or 1% discount.
I don't know about that - I think if you're buying more than 10, you generally just go directly to the manufacturer. The Avalon is a notable exception, with BlockC having exclusive distribution - but as you can see, their MOQ is 10, so really Zoomhash's business is to buy these blocks of 10 and part them out - which is what translates into the price.
Personally, I've found Zoomhash's prices to be fair and their support to be good - but their tenancy to just cancel orders is basically a dealkiller for me. I pay the premium for a reason - I understand that sometimes business situations change, but at least offer me a discount or something to keep my business after you screw up what I'm trying to do.