As an update, I asked an official Q&A question on GearBest website, and they said this in response:
Your original question is “Does this item have a US charger option? And is the keyboard EU style (AZERTY) or US style (QWERTY)?”
Here is the answer from Our Customer service Team:
”
Hello <My Name Redacted>,
Yes. we will send US charger to you. The style of keyboard is US style (QWERTY)
I just placed an order on GearBest for this model from their HK-2 warehouse with the special instruction requesting the US plug, so hopefully it comes through… If not, it’s cheap enough to get a EU -> US plug adapter on eBay/Aliexpress, so it’s not a big deal.