I sell stuff on EBAY and I ALWAYS ALWAYS ALWAYS.send it "signature required". I have purchased stuff and the seller has never required a sig.I find the stuff on the porch. If I were a crook I could keep stuff and then claim I never got it.Without a sig the seller has no proof that he sent you what you paid for.
It is the sellers responsibility to make sure the package gets there one way or the other. I ordered a bunch of T SHIRTS one time from Summit and they sent them to the wrong address.They had an old address of mine on file ,so when I paid online I made sure to change the address to match my debit card billing address. They still sent it to my old house.After some time waiting I checked tracking number and it showed "delivered". I had to call Them and complain and they still tried to say I was S.O.L and wanted ME to go knock on the front door and ask the people living there if they had my stuff...I refused and they finally sent me replacements. The funny part of it is THEY sent it to the wrong place and then filed a claim with UPS for losing the package..I know this because UPS called me while investigating it.