Posted by KWIL on 27/07/2012 19:34:25:
The same applies if for instance VAT were to be put up, the new rate must be applied on all orders sent out after the magic hour. and
Since I don't live in the UK, I have to bow to your greater knowledge Kwil but I'm rather surprised.
In Canada, tax increases apply to sales made after the magic hour. If a vendor offers something for sale (online or otherwise) at a given price and I buy it, paying by CC or perhaps Paypal, the sale is deemed to have taken place at that point and the tax rate at that point is applied – regardless of when they send it out and regardless of any tax increases in the meantime (or decreases
).
Moreover, when I accept the vendor's offer to sell at a given price by plumping down my money, there is a defacto contract between us at that point, my part having been fulfilled. The vendor is then obliged to sell it to me for the stated price.