I had an Amazon seller sue me because Amazon refunded my money for a defective Fuji camera body and they didn't ask me to send it back to the seller and the seller never reached out to me to ship it back! LOL it was only $150! A long story but...
Technically it's not a warranty but it might be a distinction without a difference. Usually with service plans there are exceptions, deductibles, caps, and other subtle limits. Just be sure to read and understand the terms since they cover...
When you buy from B&H or Adorama, the package comes to your home address from NY (not China or Canada or anywhere else) so buyers can order with no worries about customs, tariffs, or fees. Based on the price on D-W website, it appears to include...