You have a valid point, but knowing everything you know and how the BTC business works,
and the fact that none of these companies are venture funded or have a million dollars to fall back on,
do you think its unreasonable to say that they are not going to do refunds?

if you put it in the context of your neighborhood plumber and you tell them I want you to re-model my kitchen,
and you pay them upfront and they go out and get you custom marble, cabinets, stove, refrigerator and they layout the money and then you come along a week or month before they are to deliver and say "I want a refund"

What do you expect to get back from them after they have spent 80% of your money?

And the excuse of "Well they can just sell my order to someone else" is not valid, because it's your order, you go sell it. They have already invested your money in office space, boards, components, heatsinks etc.