Standard response from UPS for damage is "insufficient packaging". Their theory is that if was sufficiently packaged, it wouldn't have broken. Unless you can see UPS tire tracks over the box, no payout...
UPS will ONLY deal with the shipper, not the recipient. Don't listen to guys that say "I insured it", it''s your problem. The payment goes back to the shipper; it's your problem to collect from the shipper.
I got screwed on the very first saw I ever bought on Ebay. Casing broken in transit, UPS wanted it shipped back to the point of origin for examination and then they refused the claim. The seller wouldn't pay me, ebay wouldn't listen, he wouldn't ship the saw back to me, it went on beyond 90 days so paypal didn't pay, so I ate it and had NO broken saw either.
If you get in a pissing contest with a seller over a package damage, lodge a claim early and force resolution one way or the other before the 90 day window closes.