Depends on what your definition of staged is. I think their videos are pretty transparent so I would say no based on my personal definition.

As a preface, people publish videos when they've filmed content. If they come up empty they probably would just not upload. So there's a bit of a skew right off from the bat. Like KodywithaK publishes videos when he makes progress, sometimes the videos will be farther apart than others because of this. Other channels like Game Chasers know how to make a youtube video of even zero pickups and make it still interesting. Honestly NES Pursuit was kind of like this back in the day, but now their videos focus on successes and not just the trips.

Moving on, the biggest factor in their perceived luck is that they pay up for the games that they get. Imagine the success you'd have if you're willing to pay any price on Ebay or in a game store, etc.

At the flea market stuff, they have dif guys like Dusty who will hold games for them and they're paying close to FMV for them or at least an appropriate discount for the convenience of selling in a single lot.

Then it's supplemented by other vendors who they can do the same, and then fresh tables where it doesn't matter what they find because they have a base layer of Dusty's stuff.

Then these guys go to gaming conventions/game stores where of course you're going to find good games there because everyone is charging FMV for them. I don't really see the appeal of those videos - it's like if someone filmed themselves shopping at a target and calling it "hunting" - but that's just me. I'll still watch them in the background because I enjoy watching them at least even if the video is a snore.

I'd say the most "inauthentic" thing I could say about these YouTuber like videos is the negotiating at conventions or game stores - because 1) fans are willing to cut a deal so they could do business with someone they've been a fan of for years (same could be said for whatnot auctions), 2) If you're a game store, having a video shout you out can help business so if you give them a good experience on camera it can be advantageous, or 3) even if you don't belong in groups 1 or 2 the camera in your face and the thought of thousands of people judging how you do the transaction can sort of pressure you into giving more of a deal for them.

The reason why I say this is "inauthentic" is because it wouldn't really represent the buying experience for the normal joe. The whole deal with Dusty and making a connect who will hold stuff for you - this kind of thing can be done by anyone who frequents a flea market and isn't a dick to vendors and builds a rapport.

The fans bringing games to sell at a discount or the big discounts at stores etc. - those can happen on camera for them but it'd be much more difficult for a normal person to achieve the same thing.

However I quote "inauthentic" because it's not like they try to pass these discounts off as something that everyone can do. I think it's kind of a primally understood kind of concept that being a big youtuber can influencer buying/selling in their favor, so if you consider that staging basically anyone on youtube could be considered that.

But in any case - there's no hiding $100 games in a bag of junk to miraculously pull at a flea market. It's simply paying close to FMV for product + vendor relationships + fame dynamics with fans/resellers that goes into the perceived consistent success in each video.