look at the 661 deals on there as well, they sell models that are a few years old but you can get some of them for under £40!
if they're good enough for DH MTB'ers then they'll be good enough for the odd roll around a park or track
Perhaps but I remember that old Bell advert, "if you have a $10 head, buy a $10 helmet"
Going to take a look as the Missus needs to get me something for Xmas