Wanted to buy an N64 game on eBay but it's been a while - how do you spot fakes?

I was thinking of grabbing a few N64 games but it’s clear that buying them is a whole new ballgame compared to 10 years ago. How do you spot fakes? It feels like navigating a minefield.

I have my eye on Conker’s Bad Fur Day and Kirby 64 Crystal Shards, but I really can’t tell what to buy since the VAST majority of sellers don’t have the PCB pictured.

A lot of fakes are pretty good these days, but with good photos I think it’s easy to eyeball a genuine game. Maybe post some you’re considering and we can say yay or nay.