The machine arrived with a European-voltage power supply; Broadberry sent me a no-cost replacement which I got in two business days. They even offered to pay for shipping the computer back to them and installing the power supply themselves, which would have cost them a few shiny pennies (and taken me longer to repack the machine than to switch out the power supply).
Amazingly, at no point did I ever have to listen to a machine, chat a bot, search for contact info, wade through a "customer service" menu, argue with English-mangling tier-1 screeners, get email from a "do not reply" address, or be put on hold. Every contact I made was answered by the morning of the next business day, or sooner, *by a person* – the same one each time, and speaking English!
Any computer I buy from now on will be from Broadberry. Two things to do if you order from North America:
1. Make sure they know you need a 120V power supply.
2. Warn your bank. Some banks don't like international charges. One bank froze my credit card because of that; it took me longer to get the card unfrozen than all the time I spent on this order put together (including swapping the power supply and setting up the system twice for testing). Another bank didn't blink, but slapped an international payment surcharge on the transaction – it was a small amount, but I was not forewarned.