It's hard to give a straightforward yes or no. Comic Concepts has its pros and cons. Some of their products are great, but there have been issues with delivery and customer support in some cases.
It depends on a few factors. If the animation follows the original story closely, uses good quality graphics, and has a coherent plot, it could be considered legit. But if it strays too far or has poor production values, it might not be.
Well, the legitimacy of G Mart Comics is a bit of a mixed bag. Some customers swear by it, but others have run into various troubles when dealing with them.
Honestly, I don't know. You could look into its reputation in the manga community, or maybe see if there are any reports of scams or issues associated with it to determine if it's a trustworthy store.
Among the popular ones is 'Cryptonomicon' by Neal Stephenson as well. It's a long and complex novel that weaves together stories from World War II and the modern day, all centered around cryptography and technology. It has a large cast of characters and a very detailed and engaging plot that keeps readers hooked from start to finish.
One legit scary story is 'The Tell - Tale Heart' by Edgar Allan Poe. It's about a narrator who is driven mad by the old man's 'vulture - like' eye and eventually murders him. The narrator's descent into madness and the guilt that haunts him, shown by his belief that he can still hear the old man's heart beating under the floorboards, is truly terrifying.