Hint:
Sliding scale prices:
1-9 units per 79,50 EUR (1,59 EUR per)
10-19 units per 78,70 EUR (1,57 EUR per)
20-39 units per 77,90 EUR (1,56 EUR per)
> 39 units per 77,10 EUR (1,54 EUR per)
79,50 EUR
1,59 EUR per
incl. 19% tax excl. Shipping costs
21 to 21 (from a total of 21)