So a part broke, got lost or is eaten by your dog. It happens. To keep you happy we'll send you a replacement part. That's on us. The shipping will be 10 euro. We feel that's a fair price and hope you do too.
To be perfectly sure we ask you to e-mail us ( firstname.lastname@example.org ) a picture of the part that broke. Oh, it's lost huh? Take time to describe the part to us. Thanks!