Id like to add too as Popsy states
"it's worrying that more and more pet food companies are bringing out 'grain-free' dry food, because what they are supplementing the grain with is really high volumes of meat meal"

If meals are listed further down the ingredients list then foods arent packed full of them. Your idea on starches also as being 1% of kibbles - rice is a starch found in most kibbles at quantities ranging from 20 - 50%.