Dutch Bike

The best one I've seen, and the most affordable is the Wald one (between £10-20), they're perfectly functional and look pretty nice, sadly only sold in the US, I'm hoping SJS Cycles will bring them over;

http://www.waldsports.com/index.cfm/wald157basket.html

I wish i could say otherwise, but Wald's suck. if you use them regularly, they don't last longer then 5-7 months until they start breaking. I had the largest delivery basket, in the black mesh material. Supposed to be durable and functional. It was VERY loud from day one, and then after about 3 months of groceries and such, started to really kick the bucket.