... All money we are out due to someone else's mistake.
You do bring up a valid point. Generally when a faulty bottle or batch is sent back for replacement, we do try to throw in some extra juice with the fresh bottle(s) to help offset the cost of shipping. In the past, I believe we have issued partial refunds where shipping costs are a major concern of the customer. We try to do SOMETHING extra when the issue originates on our end to make amends and ensure that both sides feel like the problem is fairly resolved.
I know that's not a very concrete answer, but the truth is that these cases are rather rare and lately we've handled these situations on a case-by-case basis. We try to be as flexible as possible when ensuring that you, the customer, are getting your money's worth one way or another. We don't advertise that last detail largely because we wouldn't want someone to start taking advantage of that intentionally somehow.
When ordering from the UK, the above reports, high price and time taken to ship makes it slightly worrying to know there may be bad bottles.
Would you refund return shipping if it was a bad batch since it is not the customer's fault?
How about an extra $1 option to quickly check the smell/contents of the bottle before despatch?
Oddly, I don't think I have had to personally deal with an international return before aside from maybe one from Canada in which case I think we ended up sending enough juice to cover the cost since they had been a long-term customer with us. I'll have to get back to you later this week with a better response on how we would handle that situation. I believe international orders are handled slightly differently, depending on what method you used to get the juice to you.
The issue of bad batches of juice is being highlighted in this thread, so I can understand your concern, but I can say with confidence that it is not a common problem we have.
EDIT/UPDATE 4/24: I meant to get back to this last week, but it slipped my mind. In regards to international returns, if there is a glaring issue with an order (such as a missing bottle, wrong bottle, wrong flavor inside a bottle, etc.) we would be willing to to handle all costs involved. For issues regarding an "off" tasting bottle, we would most likely have you ship that back to us at your expense unless we've had reports of similar issues within the same time period. Ultimately, such problems would continue to be handled on a case-by-case basis.