Bought 2 of them from amazon on black friday lol.
I'm sorry, I don't know what you're attempting, but I don't think you're telling the truth.
Firstly, you said you got it on Cyber Monday, then you say you got it on Black Friday. Secondly, I have a price history plugin that checks prices on Amazon. On those two days, it was $439.99, so basically you're telling me the Mail-in-rebate is $100 off, which is unheard of. Thirdly, the folks at slickdeals catch on to deals very quickly and I would've seen a thread about it as I have price alerts set up with them, even searching for that price on their forums doesn't exist. Fourthly, you most likely bought it used or you bought a new Samsung 840 (non-pro, non-evo) 500GB, which is priced closer to $339.
If you're trying to drive down my asking price by that much without any proof, then please leave. I'm already taking a loss on my purchase. I'm open to price negotiation, but I can't stretch it that far.