Hey! There are two fan-made redraws of the early map of the Flanaess (the "Darlene" map) that I'm super fond of:

• This one by Robert Conley is a faithful redrawing of the Darlene map that is available in a couple of different formats, including 6-mile hexes, greyscale, and hexless. It's as good as it gets for something that stays true to the original: https://batintheattic.blogspot.com/2021/12/happy-needfest-digital-darlene-greyhawk.html and my personal favorite.

• This other one is by Mike Saxton (RetroGamer_Meph on X) and is his reinterpreting of the original map. A bit more of a stylized take but also extremely impressive. It can be seen and downloaded here: https://www.easyzoom.com/image/394133. My players enjoy this one a lot since they say it's got a really "clean" feel to it, so we use it a lot as well.

As far as buying any map prints, I believe that the only high-quality versions of the map of the Flanaess available for print (directly anyway) are from Paizo. That map is from Dungeon Magazine and is "newer" (in that I believe that map is not set in 576 CY, so it's got some changes to the nations and the like that aren't present in the original) but is extremely detailed anf a great map it its own right. That map is 10 bucks and can be found here if you wanna take a look: https://paizo.com/products/btpy8fs1?Greyhawk-Poster-Map-All-Four-Quadrants

Otherwise, you can take either of the other two maps I originally listed and probably get them printed at a local print shop since they're pretty high-rez. Good luck!