It's not very common, but some visual novels might have special promotions or bonuses if you use PayPal. Usually, these are more likely to be found in smaller, indie - developed visual novels where the developers are trying to encourage different payment methods.
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 was common to do part-time proofreading work on the Internet, especially on some online education platforms. These platforms allow individuals or institutions to set up their own courses and provide online teaching and tutoring services. In this case, students can find part-time proofreading opportunities on the platform to support themselves or others. Some common part-time proofreading platforms include Coursera, edX, Udemy, and so on.
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.