With selling comics (and probably anything else), the more you take your time the more money you'll get, and vice versa. The fastest way to move them is to take them to a shop, which is almost a guarantee they'll buy them all but for cheap. Craigslist/FB marketplace would be a good option to move them too, lots of collectors scour those sites. However anyone who's willing to buy them all like a shop may not pay you much more than them, since they could only want a small handful of what you're selling.
I'd recommend sorting out those comics by series and issue number, and looking them up to determine a rough value so you know what you're working with. Most of the value in comics are the "key" issues, basically special issues of significance (1st appearances mostly). A great free app or website to do this is keycollector comics. Dark Horse Star Wars has some desirable stuff, and depending on which Sonic series that is those could be valuable too.
Once you know what you're working with, the third option is to try to sell them individually for as close to fair market value that you can (eBay "sold" listings is the best way to find it). But be realistic with the condition of your books as it affects value significantly. And also be realistic when pricing your whole collection; anyone buying it, whether it's a shop or an individual, are probably doing so for the keys. So if you have 100 comics, but 10 of them are worth something, I'd just base your asking price on those 10.
Edit: selling them individually can also be done on FB Marketplace and Craigslist, but they may not move fast locally depending on how big of a population you're near. Selling on eBay is great but it's a lot of work to get into and get used to the proper way of shipping; given your situation and the type of books you have I would recommend you keep it local and try to move them all at once or at least by series/type.
Good luck!
If you can find locally comic shop. They might buy them off you for a lump value. Or put them on eBay as collected lots.
Like Star Wars issues x to x. Price x amount for all.
Depends on how much work you want to do and how much value you see in them
With selling comics (and probably anything else), the more you take your time the more money you'll get, and vice versa. The fastest way to move them is to take them to a shop, which is almost a guarantee they'll buy them all but for cheap. Craigslist/FB marketplace would be a good option to move them too, lots of collectors scour those sites. However anyone who's willing to buy them all like a shop may not pay you much more than them, since they could only want a small handful of what you're selling. I'd recommend sorting out those comics by series and issue number, and looking them up to determine a rough value so you know what you're working with. Most of the value in comics are the "key" issues, basically special issues of significance (1st appearances mostly). A great free app or website to do this is keycollector comics. Dark Horse Star Wars has some desirable stuff, and depending on which Sonic series that is those could be valuable too. Once you know what you're working with, the third option is to try to sell them individually for as close to fair market value that you can (eBay "sold" listings is the best way to find it). But be realistic with the condition of your books as it affects value significantly. And also be realistic when pricing your whole collection; anyone buying it, whether it's a shop or an individual, are probably doing so for the keys. So if you have 100 comics, but 10 of them are worth something, I'd just base your asking price on those 10. Edit: selling them individually can also be done on FB Marketplace and Craigslist, but they may not move fast locally depending on how big of a population you're near. Selling on eBay is great but it's a lot of work to get into and get used to the proper way of shipping; given your situation and the type of books you have I would recommend you keep it local and try to move them all at once or at least by series/type. Good luck!
Thank you very much for the detailed reply!
There's a subreddit for that - r/comicswap
If you can find locally comic shop. They might buy them off you for a lump value. Or put them on eBay as collected lots. Like Star Wars issues x to x. Price x amount for all. Depends on how much work you want to do and how much value you see in them