Overall my experience with Zoomhash has been a nightmare so far.  I have had several issues with my orders.  Here is the timeline of events:

Ordered 20 Gridseed miners off Ebay on 3/6 and paid via papal immediately.
Didn't get any communication at all from Zoomhash so I messaged them on 3/11 asking about the status of my order.  They said there was a delay in shipping because they were scared of Ebay fraud, but told me I was going to get a partial refund for the delay.  They said my order would ship out the next day.  At this point I cut a deal to buy 40 more Gridseed units via BTC.  
One of my orders shipped out on 3/12 and the other one on 3/13, both from China.  I received all 60 units on 3/17.
My order only came with 40 USB cables instead of 60 so now I have 20 miners just sitting around.  Also one of my units has an incorrect female power port so I cant fit a barrel connector in it.
I sent a PM to Zoomhash on 3/17 explaining the issues with my orders and that I did not yet receive the partial refund they originally promised for my Ebay order.  
Shortly after I receive a PM from someone working at Zoomhash for my BTC address so I gave it to them and they sent me a partial refund for less than half the amount I was originally promised.  Nothing was mentioned about my missing USB cables and defective miner.  
This morning (3/18) I sent an email to Zoomhash and have not heard anything from them all day.  

So now I have no idea if I should just go order USB cables on my own or wait