Oysters never tasted good to me. The whole GoT plot in season 7 with the Oyster selling girl stalking people throughout the city, and into a brothel never made sense to me... Who buys oysters, as a impulse snack? Crazy
Except even more practical and simple to produce/distribute in that ... its a coastal town with a good deal of fishing and aquaculture and whatnot going on.
Arya would just have to go to the docks, find somebody with a huge bag of oysters and say hey, gimme a cart, i'll go roam around and sell these before they spoil, you keep 80 or 90% of the money when i come back with the empty cart.
In that sense its basically a farmers market: extremely local goods.
Modern hot dogs have to be manufactured in a factory and then sold to a hot dog stand operator, shipped halfway across the country or world.
I mean yes, initially it is risky, but perhaps a contract was signed, or perhaps the oyster owner owns so many that he sells to local restaurants or market vendors that he figures worst that happens is i lose 2% of my regular oyster haul, best that happens i make a bit more money off of that 2%.
If I am not mistaken the actual episode(s?) where Arya does the oyster selling show a relationship between her and whoever she's getting the oysters from.
As far as real world examples: anyone who has ever been hired to drive a cart or wagon or car could just attempt to make off with the vehicle and/or its belongings...
Mate, if you've met an ice cream truck driver who'd just let you walk away with all their goods and a promise that you'd pay them back, I need to know where you live. I want in on that.
No, the point is that the driver could just drive away with the truck and its contents and attempt to sell the truck, strip it for parts or whole, fucking over whatever entity is paying his wage.
Ok but how funny would that subplot have been if she was pushing a fucking hotdog stand around king's landing and exactly nobody was addressing it as if it wasn't the most normal thing in the world?