In consultation with our fulfillment company, they expect that the UK shipping rates will remain roughly similar to the status quo. Of course no one knows for sure, but that's our best estimate. Any other number we gave you would be essentially guessing, so we decided to figure that by 12/31/20 they will decide to stick with something close to what it is now.
The good news for you is that if you fulfill the PM survey out in 2020 and they change the rates, we're highly unlikely to come back and ask for more money for shipping. If our estimates are wrong, we look at it as a cost we have to eat.