Again, elfs. And goblins. At once.
"Ma'am Overseer, the merchants from the Nature of Excavation are here again!"
"Good, good. I wonder what wonderful caged creatures they bring us this time. Quick, Urist, start getting some rock crafts so they don't suspect anything!"
"It's better if they never realize we are taking advantage of their extremely unlucky business, right?"
"Yep. Also, on the off chance we don't get attacked again, it would be a shame not to get more war leopards for figurines of humans fighting elfs."
"Why do we keep coming, Fela, seriously?"
"Because Legendcrypts isn't openly hostile towards us, and therefore, the druid wants to get more figurines from these dwarves. You know he collects them. Also, they never tried to give us wooden bins, dirty unclean wooden bins, which is a plus."
"No, I mean... 5 time in a row, we elfs come to trade, and 5 times in a row, bam! Goblins! You're only alive today because last year, somehow, when you started the business, the siege didn't bother to kill anything more than llamas. And honestly, I think I'd rather have died, because there's nothing more humiliating than coming back to the depot where you left ALL the merchandise, seeing the corpses of your llamas, and the dwarfs bringing OUR merchandise inside THEIR fort, going all 'Aye, we can still give you well-crafted shale mugs fer yer stuff, if yer delicate hands can carry it all, sucks to be ye'. You'd think the boss would have understood by now it is at the very least mediocre business practice, at the most, a war declaration."
"I know, I know. But other than that, they're pretty respectful. You know, for alcoholic midgets."
"Do you think they intentionally call goblins to ambush the place at the very exact time we show up?"
"Nah. However, I'm starting to think the majestic trees that disappear here may be... you know... cut down. *shudders*"
"Shut up, if the dwarfs hear you, they may want to show us what exactly they have done with these poor trees. Besides, joke's on 'em, we brought caged mules."
EDIT: they're getting better at this! One wounded llama with its load, and one unharmed elf managed to get away! I'm impressed.