It depends. If you're a big manga fan and love having a collection, they can be totally worth it. You get multiple volumes in one go and can enjoy the series without having to hunt for individual issues.
It's possible for manga box sets to be fake. Sometimes, poor-quality reproductions are made and sold as the real thing. This can be difficult to spot for the average buyer.
Whether manga can go in the recycling box varies. Simple paper manga without any unusual additions can be recycled. But if it's got things like glitter, sticky labels, or odd materials, it probably can't. Best to look at the recycling guidelines for your area.
Manga box sets are expensive because they include multiple volumes in one package. This saves you from buying each volume separately, but the combined cost along with packaging and distribution expenses adds up.
It depends. Some manga and comics made of recyclable materials like paper can go in the recycling box, but those with special coatings or bindings might not be recyclable.