I bought mine second hand for 450 euro (but my local currency) with 1 tb ssd. This was around 2 months before oled. I worked out great for me but its a risk. It might be a way to find something for a good deal when oled has been out for a few weeks and second hand lcd decks has dropped in price.

The games i have played online is star wars the old republic, world of warcraft, final fantasy 14 and war thunder. All multiplayer parts of the games works great. Mmo’s are great to play on steam deck. War thunders controller (tanks) didnt feel great so i uninstalled.