Hi sneakeyspider.
I love my Pyrus Mini which Amazon.co.uk delivered to my US address.
There's no need to worry about US Customs charges when buying one from them. Just select a Pyrus Mini that shows as being shipped from Amazon themselves. It ships with a Customs form stuck on the outside and since it's below a value threshhold, there won't be any Customs duty to worry about anyway.
Here's what you do.
Sign into your normal Amazon account at amazon.com.
Scroll all the way down to the bottom of the Amazon page and click on their United Kingdom store link.
Once on their UK site, sign in again if needed.
Search the site for "pyrus mini".
On the search result page which will show all three colored models, choose one that shows it
ships from Amazon.
(On their UK site's results page, look for the words "Eligible for FREE Super Saver Delivery. No, it won't be FREE to the US, but keep reading...)
Once on the product page, click on the option to show More Buying Choices.
Make sure you choose one that shows amazon.co.uk as the Seller and add it to your basket.
Once you put it in your shopping cart, there will be an "Estimate VAT, Postage & Packaging" button to press

The price will go DOWN, as VAT (value added tax) is removed.
Today it went from 46.70GBP to 38.92.
And they show the shipping cost as 6.98GBP, or 45.90 total ($70.09).
I just did the above and it looks like only the red model is available directly from Amazon at the moment.
When I bought mine, they only showed blue.
If you don't want red, just wait a bit and the others usually come back into stock at Amazon.