The entire The Slithereen Exile Set is 7.24€
The Blades of the Slithereen Exile Pack, which is included in the above set, is 49.99€.

I imagine someone meant to type 4.99€, but then again, these new blades are pretty sweet.

EDIT: Realized this is in the wrong section. Attempting to delete it.
EDIT2: Gave up.