Dauben is a highly viviparous sky blue waterlilies with nice fragrance. It can tolerate cold than most of the tropical waterlilies. 
 
It can grow in smaller ponds and is a prolific flowerers with light blue petals with slightly darker tips, often fade to near -white in full sunlight. 
 
The plant for sale is potted in 200mm diameter pot. The price would vary if it is potted in larger pots