In reply to TobyA:
And, as mentioned, understand that when you buy a product you aren't simply buying the physical product, but a contribution towards the cost of R&D, setup of the business, risk etc. If you could only charge £1 for £1's worth of plastic, many innovative products would never have happened.
It's similar to resenting a pint being over £3 at the pub but £1ish from a supermarket. The business model is totally different; at the pub your pint-an-hour-or-so has to pay for the building, heating, decor, the landlord's wages..... If you think that's poor use of your money that's fine, don't spend it, but I think understanding of what it's actually like to run a business is called for.
Post edited at 09:45