If it was going to cost about $10 for it to be posted, and it would have cost them roughly $10 in petrol and time to deliver it, then it wouldn't bother me. If they lived down the street and charged me $10 for pistage I'd be feeling pretty ripped off...but would just put it down to a learnibg experience not to do business with them again.
...However! I would find it a bit creepy that they'd come to my house... I don't know why? It just seems a bit...personal(?) that a stranger who I'd done online business with had been to my house without telling me first.