Home Forums Hunting & Shooting Hunting Optics Swarovski warranty

I have a question for Swarovski binocular owners regarding the warranty. I have a pair of SLC8x30 that quit focusing.
I pulled them from my pack in a padded case one day while hunting and they wouldn't focus. They had never been dropped or abused.
I sent them in for repairs. They sent me an estimate to repair and claimed the internal prisms are damaged and the bino's will need to be rebuilt.
Estimated cost $450.00. How can the internal prisms be damaged? they have never been dropped and the exterior shows no abuse.
What kind of warranty is this? Is this normal?
If this is normal for Swarovski , is it normal for other manufacturers? If not who has the best warranty?
I have never had to send bino's back for repairs. I have sent many scopes in of various brands and never been charged.