why in dollers?
Although we are based in the UK the market for Bitcoin mining hardware generally quote prices in USD.
BEWARE! Don't price/buy in $, if there is a contract dispute you'll have to duke it out in a US court, because it's not legal tender in the UK, your trade will not be recognised by the UK courts! US also taxes all $ based barter trades (commodity swaps)
It has nothing to do with the currency it is price in, it could be priced in jelly beans.
It is where the sale occurs that is used to decide the jurisdiction and the UK Distance Selling Regulations are very clear. The company is registered in the UK and the company offices are in the UK therefore all sales regardless of the currency used, or final destination of the goods come under UK jurisdiction and any dispute will be held in a UK court. It also means that if the company goes over the VAT threshold of £19,250 of sales per quarter then thy must register for VAT and 20% extra needs to be added or taken from the price, non EU residents can claim that back.
The only caveat is if the company has an overseas office and can prove that the invoices and receipts for the online presence and sales are paid to and from the accounts of that overseas office, then the jurisdiction is expected to be in the overseas location but even that can be appealed against.