About 2nd hand.

Many are sold because the owner had problems with the unit or it didn’t meet their needs. Since you want it for gaming this is usually a bad idea unless you can withhold payment until you can be sure your choice of game runs without issues.

Gaming on a plane? That’s another issue. Laptops reduce performance to extend battery time. My gaming laptops could not reach 60 minutes of runtime if I overrode the settings to get game performance.

That’s TWO NO’s from me dawg.