do you also buy comic books from early 1980's

To be brutally honest if you want top dollar then sell it yourself on eBay and enjoy the headaches. A few points before doing so. Most comics are not worth the amount that people think. Just because the comic store can sell a collection for $300 online doesn't mean they will pay you $300 for it. Or even $150 for it, it's a business that requires patience for turnovers. Your collection sold today might not sell for years. eBay buyers can be finicky with comics and collectibles, how's your customer service skills? You truly are better off taking the hit on price and avoiding the headaches

I have a lot from that era (well, 1984 on), but have not picked up any back issues from then in quite a while.