Buy HydraBus v1.0 Rev1.4 on Amazon:

Amazon FR: https://www.amazon.fr/HydraBus-v1-0/dp/B088F4BNHK
Amazon IT: https://www.amazon.it/HydraBus-v1-0/dp/B088F4BNHK
Amazon ES: https://www.amazon.es/HydraBus-v1-0/dp/B088F4BNHK
Amazon NL: https://www.amazon.nl/HydraBus-v1-0/dp/B088F4BNHK

Note: Amazon FR https://www.amazon.fr/s?k=hydrabus can be used to buy HydraBus products to Germany / USA or other country (depending on your Amazon account)
If for any reason you cannot buy on Amazon you can buy them from online Shop (when available) or contact hydrabus