Bit disappointing, this. Still, it's typical of rip-off Britain. Remember Tesco selling Levis jeans at American prices? They soon put a stop to that...
One other thing – hate to nitpick, but an undertaking is a guarantee, not, say, an injunction or some other demand to cease doing something, so Messrs Bird & Bird can't be issuing undertakings demanding these retailers stop selling "grey iPods".
I'll get my coat. For being the local pe'dant (sic).