It's been well published that even the big official on line sellers only pay token gesture of tax... As well as various coffee shops etc.... So as a customer you can never be sure.... The fact the all the official sellers always seem to have exact same prices is little rigged no ? ... What illegal price fixing maybe by the OEM/distributor?
I wasn't the importer, I ordered from a UK website from a company with a UK address, which is printed on the invoice, I made a UK based purchase.... Liability is with them not me.