Asos on-line salesman saw a half year profit of 87cc to £ 4m (€ 4.6m), blaming "interim transfer costs".
12cc sales in cash grew steadily to £ 1.3bn (€ 1.5bn) in the six months to February 28.
The company agreed a significant amount of mobile costs in relation to new product capabilities and a high level of discounting and market incentive activity.
Boss chief executive Nick Beighton said: "We have identified a number of things that we can do better and act for it. We are confident that performance will improve in the second half and we do not change our guidelines for the year.
"We are concluding at the end of a major capex program. Indeed this involves a lot of confusion and transition costs, the global capacity it brings now brings we have increased confidence in pursuing market segmentation and the revitalization of profit and the speed of generation of cash. ”