This list was made with information from Price Charting. There are three main categories when listing prices on the website: loose, complete in box, and new. The article takes all three of these features into account along with exclusively. It will also look at all consoles be it those in the PlayStation family, Nintendo family, and so on.
For example, a new version of Super Bomberman Party Pack, which comes with a multi-tap for the Super Nintendo, goes for over $600, but loose it is only $60. Not bad to get that accessory, right? Honestly, when it comes to price, it’s hard to rank these even on websites like Price Charting. That said, even if these ten aren’t the definitive rarest and most expensive accessories out there, they are indeed among the top.
10 Playstation 3D Display
The Playstation 3D Display goes for $152.50 loose, $180.50 complete in box, and $449 new. This was a 24-inch TV with 3D capability. A 3D TV? How is that an accessory? Well, since Sony made it with the PS3 in mind, they added a split-screen mode where if one person wore the glasses, a display would appear like there were two TVs. It was expensive at the time, but it was an interesting idea nonetheless.
9 Wide-Boy 64
The Wide-Boy 64 goes for $337.33 loose. Why are there no in box, or new conditions? Well, like the Super Nintendo accessory, Super Game Boy, the Wide-Boy 64 was designed to play Game Boy and Game Boy Color games on the TV via the N64. This is a rare accessory in that it was only handed out to press and developers, meaning it was never sold to the public. That’s why it only has loose options.
8 King Mickey Disney Infinity Disc
The King Mickey Disney Infinity disc goes for $269.23 loose and $350 new. It was an add-on disc for Disney Infinity 3.0. When used with the Mickey Mouse figure, it would turn him into his Kingdom Hearts model, complete with Keyblade. This was handed out to attendees at the D23 Expo in 2015, which is why it is is so rare. That is to say, it was never sold to the public.
7 GameCube Component Video Cables
The GameCube component cables go for $225.75 loose, $289.29 complete in box, and $810.01 new. When this system and other consoles of this generation shipped, HD TVs were barely a thing.
That’s why these consoles shipped with standard AV cables. Well, by the end, most had component cables as options to hook up to HD TVs which were more prominent by the end. The GameCube's were the rarest of them all.
6 Game Genie Top Loader Adaptor
The Game Genie Top Loader adaptor goes for $253.58 loose, $397.37 complete in box, and $1271.59 new. First of all, toward the end of the NES’ life, Nintendo re-released the system to reassemble the Super Nintendo’s top-loading slot. This re-release then needed new accessories, like this Game Genie revision. Because the console and its accessories weren’t as mass-produced, they fetch higher prices.
5 Vectrex 3D Imager
The 3D Imager goes for $469.11 loose, $2110.99 complete in box, and $2111.07 new. It was designed to work with the obscure Vectrex console in order to produce 3D images. This was one of the first of its kind in 1984, but because the console wasn’t well supported, this too wasn’t utilized to its full potential.
4 Panasonic Q Gameboy Player
The Panasonic Q Gameboy Player goes for $499 loose, $1283.05 complete in box, and $2800 new. It was released only in Japan as a collaboration with Panasonic, adding a DVD and CD player to the system. Because it was redesigned, it required a new version of the GameCube Game Boy Advance add-on that lets players use GBA games on the device. Rare console. Rare accessory. This should be assumed by now.
3 Nintendo 64DD
The Nintendo 64DD goes for $738.05 loose, $1749.98 complete in box, and $4724.95 new. This, like the Super Nintendo’s Satellaview add-on, was meant to both extend the life and power of the N64.
Somewhere along the line, plans were scrapped for games utilizing it even though the component was virtually done. This was basically unreleased which is why it is so valued by collectors.
2 Exertainment Mountain Bikerally Speed Racer Combo
The Exertainment Mountain Bikerally combination with Speed Racer goes for $1346.89 loose, $2630 complete in box, and $4800 new. This was essentially an exercise bike, with a built-in screen, that was also a controller. Like many fitness crazes of the '90s, it was both expensive and ahead of its time.
1 Family Fun Fitness: Stadium Events With Dance Pad
The Family Fun Fitness: Stadium Events with the Dance Pad goes for $9759 loose, $29251.64 complete in box, and $55000 new. Sounds crazy, right? The reason why this game and accompanying dance pad are so valued is that its original run through Bandai was short-lived. Nintendo re-released it as World Class Track Meet with its own Power Pad, which was mass-produced and also not as rare. If one finds this brand new, well, congrats.