Data from the 2011 Profit Monitor for spring calving herds show that the Gross Output from the top 10% was 39 cent per litre while it was only 34 cent for the lowest 10% which is over €250 per cow difference at similar milk yields, but as the top group usually have higher yields per cow, the difference per cow is much greater. Two cent/l of this difference was accounted for by milk price, mainly based on quality.