It kind of is, but I love the 500 yen coin anyway. It's the 2nd most valuable common coin in the world (I think) after the 5 Swiss franc, (or at least it is for now as the yen continues to tank, currently worth about $3 USD whereas 10 years ago it was $4 and 15 years ago was over $6). It makes your change jar actually worth decent money (imagine if filling up a 2 liter bottle was worth a couple thousand bucks instead of a few hundred) and it's kinda fun to have a small change pouch in your pocket worth more than a hundred bucks.

Plus it's gold colored so you can collect a pile and feel like a pirate