So, I picked up my Glowforge today and brought it across the border. I never received an invoice for my Glowforge when I ordered it, so I contacted email@example.com on Oct 5th and asked for one, but they never even replied. According to this: https://glowforge.com/faq/payment-methods-and-upgrades#when-will-i-get-an-invoice-for-my-purchase there was supposed to be an invoice with the glowforge, but if there is one here I’m not seeing it - there was a packing slip in a plastic sleeve on the outside of the box, but it didn’t list a price.
In the end I showed customs my order history page. If you haven’t gone to look at your order history page, it shows the Glowforge Basic as $4000, the air filter as $1000, and then it shows a single big discount. I explained to customs I was importing just the Glowforge, and the air filter hadn’t shipped yet. Customs was… unhappy, to put it mildly. They really wanted a proper invoice.
So, all this to say; if you’re planning on shipping your GF to the US and importing it yourself to save on shipping costs, you should probably start harassing firstname.lastname@example.org.