I bought the Oxford Stormex from Nightingales for £57 and got a free Oxford Disc Lock as well (plus free P&P).
http://stores.ebay.co.uk/Nightingales-Motorcycles
Bought my HJC FG-15 lid from them and saved £40 on rrp too!
P.S. Haven't melted the cover yet and usually throw it on straight after a ride.