For the sake of a couple of quid, I'd rather get the real thing and have my money go to the people who got it all started.
Can't help agreeing with you there.
Obviously, there's nothing "wrong" with what Farnell are doing here. But I prefer to see open-source used as an enabler for people to produce boards with some unique qualities; not just to clone someone else's work and undercut them.
Edit: Except, I guess, in situations where a bigger company is able to sell an idea at a massively cheaper price - which is good for consumers. Undercutting by £2 is a bit odd.