Even more, while 95% of the cases the manufacturers can be trusted (at least until now), the more hands the collectible pass on, the bigger the chance somebody has found a way to unseal it and copy the private key for "future use".
I was thinking, in cases like this, when you have already auctioned or sold one of those cards privately if the manufacturer wouldn't have acted like yogg and swiped all the funds but just randomly scammed one user in a collection after a year or so, you might end up in trouble and it's going to be a pain the ass to avoid getting dragged in court if the sum is anything significant like 1
BTC funded ones that were auctioned years ago!
Sad story and an eye-opener, but we could have lived without it!
Try starting a business like that now, I wonder how many customers you're going to get!