i say do smoke a joint with him, he just sorted u out, some random dude 2 hours away. it is good etiquette, just say hey u wanna smoke one, he'll probably say no but he'll think its cool that u offered, which will make him like u and that will help greatly with any future dealings.
xnoas attitude is bollocks, befriending dealers is always a top priority for me cause i move around a lot. they provide a service, but if their ur friend then its great, i got one calling in now for a game of xbox, im dry as fuck but he will smoke me out cause were tight, turned into a genuine friend as well which is cool.
and hey if hes a dick and he ripped u off just call the cops on him and ruin his life