UK Shoppers being robbed? Not really, I do get tired of these arguments.
US pricing doesn't even include sales tax.
Feel free to buy one, add shipping cost, add import duty to that total price and then add 20% VAT to that total - plus a likely handling charge from the carrier.
It's not vendors that rip the UK off, it's purely our economy. The high rate of VAT alone is crippling retail prices, this is predicted to go up further after the next election to the 23-25% seen around mainland Europe.
UK retailers have to pay UK building costs, cover it with UK insurance, fill it with UK staff, pay UK National Insurance and wages for those staff who want to live in UK housing. They then have to advertise their business at UK rates and ship their product using UK carrier charges.
In many ways, UK pricing isn't actually that bad when all is considered.