Pets sell well too, depends on what. I sold some pets for 2G each and they sold quite well, just PK shiba inu/baby bee/rabbits in Kelan and capture them, then set a stall for 2G each. They sell quite fast. hahaha

if you are high lvl, try to sell vultures, pigs at kelan, or even dino at Oslya, people think dino is cute, and I bought a velociraptor