[TYPO3-commerce] price calculated *1000

[Robert Wildling]

Hi, list,

I use commerce v 0.11.10 and try to build my first shop (just for fun 
and to learn that stuff). Now I encounter a strange problem:

When entering prices for the articles, the price is always multplied by 
1000.
A Neckless = 15 Euros, but FE shows 1500 Euros.

Changing VAT and other constants doesn't seem to work.
Can anybody help me finding out what I am doing wrong?

Thank you all!

All the best,
Robert