This chapter made me realise that AWEON should just be importing things like olive/palm/sunflower oil, salt, sugar etc. And maybe a smallish (don't want to flood the market) amount of things like cultured pearls. Oh, and cloth. Basically anything that was, pre-industrial revolution, difficult/tedious/time consuming to make, but is easy now. Skip the whole supermaket/mall shtick and go for higher value things they can sell as a wholesaler directly to merchants who can do the grunt work of moving the goods around the world.
But then it'd be a different manga I guess.