You want to trade a new PS5 disc edition, MSPR $499 for a RTX 3080 MSRP $700? Wow. Yes it is a VERY VERY long shot, AND i didn't even factor in Scalper / Ebay pricing which PS5 New disc is like $900 - 1k, NEW RTX 3080 for $1200 Minimum.
Maybe a kind soul would do this trade here but your better off selling the ps5 and use that money for the rtx 3080 so it wouldn't be a total loss. Not to rain on your parade man, you clearly have some experience selling / buying but this isn't the place to do it. Good luck.