Feel like I hit the lotto (64 gb ddr5 for 300$)

So I builtmy pc this past March and have been slowly upgrading, started with a 7600, a 5070, and 32gb of ddr5, with an air cooler in a thermal take case and all types of rgb. Have since done a case switch, gotten an aio, gotten more storage, upgraded to a tuf 5070ti, a 7800x3d, etc.

The one upgrade that I was planning on was upgrading to 64 gb of ram, but obviously in this market, it was not worth it, and I was kicking myself for not doung it from the start. Fast forward to a few days ago, I see 64gb of corsair dominator ddr5 6000mhz unopened on facebook marketplace for

500$ with the caption "got the wrong ram just

looking to get it off my hands".

Seems too good to be true, but I message and ask if he would do a trade (my 32 gigs plus cash on top for the 64 kit), and he says no, and I tell him I can't justify spending 500$ on new ram rn. Yesterday, the price drops to 300$ and I instantly message and ask for receipts because this is surely too good to be true.

Turns out he had ordered 64 gb of ddr4 and they sent him this kit, so I go today, get the ram, still thinking there's a slim chance I'm getting scammed and sure enough, I install it, and IT WORKS. I feel like I hit the fucking lotto. I attached a pic as well of it in my pc and how much this kit goes for new right now, can't believe I got this lucky.