Spoke with the Helix team and got a good deal on 3 miners priority shipped to Australia, about a day later that was increased to 4 miners. I was very specific in my requirements at the time of ordering as I had a date deadline that was not flexible. The order was placed on the 24th March USA time and last date to ship would be the 28th March, Australia being almost 1 day ahead.
Unfortunately for various reason the shipment time was missed so it was not possible to get them to me any more in the time frame originally agreed. I was offered a full refund without requesting one, which I took, and it was processed instantly and funds back in my account in about 5 minutes.
Of course I am disappointed the order did not work out, but equally I am happy that the company showed integrity and refunded when it was clear the original delivery terms could no longer be met.