Where can I buy low-sugar cereal bars?

Corny - German sugar free bars,
originally uploaded by Betacells.

This is my last "Corny", a cereal bar sold in Germany.

I bought two boxes of 10 when on holiday in Aachen before Christmas. I think they were less than €2.00 (only 15p a bar). These fairly plain yoghurt flavour cereal bars are 62% carbohydrates and 5% sugar (the hazelnut version is 1.3% sugar - for comparison note that skimmed milk is 5% sugar). They taste like you would expect sweet cereal bars to be and go really well with a tea or coffee. They were great to carry about as an emergency sugar-free snack when drinking in a cafe that only has sugary things to eat.

In the UK I can only seem to find low-fat, high-sugar cereal bars. I wish I'd bought 10 boxes while I was there.