Hi, been collecting video game magazines for about 15 years, and currently run a non-profit video game history library that I donated my collection to. I'm probably one of the few hardcore buyers of this stuff, and at this point mostly what I pay for are things that fall into that weird category of "rare as hell, but nobody cares."
Mags that sell well as individual issues on eBay are the ones with cult followings, these are the only ones that have multiple people trying to complete sets: GameFan as mentioned, early EGM (earlier than your 1994 date), some Ultra Game Players and Next Generation on a good day.
Mags that are totally unpredictable but SOMETIMES do really well on eBay: pre-crash stuff, the random rare obscurity that only the five or so of us bidding against each other on eBay care or even know about, an actual rare issue of an otherwise easy to complete run (GamePro #2, EGM #5 etc.).
Mags to sell at conventions and stores: Nintendo Power, anything that has beloved games on the cover (Final Fantasy VII etc.).
Other than that the best middle ground between them sitting on eBay forever as individual issues and you offloading everything as a cheap lot is to bundle full years together. If you've got, say, all of EGM from 1995 (or at least like 10 of the 12) you can probably do okay on eBay for them.
If you've got multiple Tips & Tricks from that era I'm a buyer, I'd probably buy the whole lot, as we're missing several and those that we do have are falling apart. Plus you get to put them in a permanent library where people can use them to study history, which is cool!
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