All my delay was at iRex's fulfillment partner.
My replacement unit appeared at the door today but alas my wife was out.
I expect we'll be having lunch again tomorrow after she gets the unit.
iRex contacted me yesterday and offered that if I can provide a "shipper recite" they will refund me the cost of shipping the unit back to them.
So, if you don't get your return shipping label, and you think you can get UPS to sing a tune for you, you may get your money back.