buy.at provide web services via the management area, which enable you to get your sales/commission reports without having to login.
These are available in a range of formats i.e. HTML, XML and CSV and can be customised to include only the data you require.
The web services are very easy to use and can be plugged into any platform you are using due to the range of formats supported.
For more information on our web services please send me an email to email@example.com and I will be able to provide you with screen shots and some step by step instructions for getting things set-up.