The bed fits mattresses of size 90x200 cm and has an overall size of 105cm x 209 cm x 38cm.
The price of 50 CHF is for the bed frame (photo 1) that is the same as the IKEA bed MALM (link below). The slatted frame (photo 2) can be bought in addition for 150 CHF.

IKEA MALM: https://www.ikea.com/ch/fr/p/malm-cadre-de-lit-haut-blanc-00249487/

Delivery within/around Geneva is negotiable.