They do show up, that reel only fits in the 3000 series tank it was designed for, it doesn't fit in the normal tanks.
It will cost you about $350-$400 for a tank, reel, and reel loader which is really the only way to load it without skipping.
The Nikkor tanks are easier if you can find them, $350 is what I paid for mine.
I'm selling all my 70mm gear including my Nikkor daylight tank, the Mamiya RB67 70mm back, and the hard to find Alden 70mm bulk loader.
I have a potential buyer for the tank and back but throwing it out there since you're in the market. Also 70mm film of course
