Uphold does not sell new coins into the supply for under 1/650. That's why you go to Bittrex to buy Voxels if the price is lower there.
Uphold does not have a fixed price for your trading. It follows the Bittrex exchange price if you want to trade.
? I am lost. So which one is true?
He says Uphold will sell you Vox for 1/650 but you can't sell your Vox back to Uphold for 1/650.