Seems too good to be true. If legit and product works as described, it's by far the best buy in the Industry.

@EMIC, 

In addition to sending a review sample to dogie, I think the idea of starting to sell them on EBay will help you to build trust.

Here's an example of why:

Last year I bought a 1THS Dragon on EBay and paid via PayPal. The seller never delivered the product within the time frame he stated on eBay.

I opened a dispute resolution claim with EBay.

EBay contacted the seller. The seller could not prove they shipped the miner ( or ever intended to ship it).
I was reimbursed 100%...and the seller was de-listed.

So in your case, once you gain trust for delivering through EBay, "word of mouth" on forums such as this will help you. Then, you can resort to using your online store to sell your miners.