I remember my friend buying the movie ava getting three in the case instead of one. Was pretty funny at the time. I just wanted to share that story, can’t give you a value sorry.
Even if it doesnt appear much its not really desirable. Also I think theres a ton of these in the sealed zoroark movie dvd cases (who buys dvds anymore, no offense), think I see like 5-10 usd sealed pokemon dvds shipped on ebay.au.
Normally if the dvd has them inside, there’s a sticker mentioning it on the case.
I’d value them $15-20.