>Anything I should know first?
Well first and foremost is that you basically can't buy them right now, they're out of stock.
But as for actual pertinent advice assuming you DO get one.
Emudeck is kind of a meme and it actually kind of sucks to have literally fucking EVERY game you would want to emulate as steam library entries. You can mostly get by just installing retroarch or some other libretro frontend, especially since PCSX2 FINALLY updated stable so the libretro core sucks a lot less now.