Amazon.de today sells the 16x16 inch / 42x42cm photo studio LED light tent for 19.99 EUR, if you include Prime is including shipping.

Use the code CRAPHYD3 to save 36 €.

FREE delivery within Germany

similar set at amazon costs from 39.99 €.

Idealo gives here as next price at least 39.99 €.

https://www.amazon.de/dp/B07C3W8YWP/?smid=ASGC1KLFC2VW6&tag=preisvergleich-idealode02-21&linkCode=asn&creative=6742&camp=1638&creativeASIN=B07C3W8YWP&ascsubtag=fZS0iH5XXXoYui9K2a9ySw

Features:

removable zipper, OEKO-TEX certified