I purchased plans for two Mavic 4 Pros through Squaretrade's webpage. Yes you need to buy within $30 days. The three year accident plan for "Misc. Electronic" priced 2.5k-$3k is $515. After you submit your receipts you can call them and ask to...
Many use the State Farm personal articles policy, however, from my understanding if you make a claim its possible your normal homeowners insurance will go up even if you don't use state farm for homeowners.
I use Squaretrade.
Yes they are available without a warranty or the option of DJI care from 3rd party sellers that manage to get them into the states. In most instances it's cheaper to buy from a South Korean seller. I would say this situation is less than ideal.