I want to become a seller here but how do I verify my Kickstarter items are real? How do I make sure I don't get scammed here? Does it actually happen often here.. idk the community seems pretty small.

Complete list of items I'm trying to sell:

Gilded Crown
Golden Idol
Golden Idol (Spiral KS skin)
Cog Frog
Scroll Case Sling
Cloudy Wings
Skycat
Bone Fiend
Cranial Hornhelm

G1 Imperial Progenitor set
Several 4 digits, two 3 digits
Some G1s, they're old but idk if they're worth anything