yeah, i mean it wasn't a gibbo, but once i mentioned "internet", a local shop was prepared to meet me halfway on my valve junior head. which was pretty much as cheap as I could have got it off the net, considering I'd have had to pay postage, and they rip you off on postage from mainland UK to northern ireland. EDIT: and as far as I know, they don't claim to "price match".
if they realise you're serious about purchasing, and also serious about walking away and/or purchasing elsewhere if you save enough, you'd be surprised what could happen.