How much should this bother me? It seems like many zards I look at in the 6-8 range (and above) have some kind of print line if you look at the right angle.
with this one I got I couldn’t see any in the scans or photos, but at the right angle there is one present. If I sell it and try for another one it might be worse since you can’t always tell from many of the photos
None of us can tell you how much certain damage or card characteristics should affect you. That’s something that you have to find out as a collector. As others have said, Dragon Frontiers is filled with print lines, so you may not be more lucky buying another copy.
Personally, I think you should enjoy your card regardless of the print line. You paid a massive 2025 gold star boom premium for it, so I imagine finding happiness in the purchase is crucial.