on that "price on bill is less than current expected price" topic
i will say that you won't pay 3k for 4GB ram because user bought it at that or higher price so there is no point in telling him to sell ram at lower price because he bought it at lower price
another example, if i got 32GB pendrive for Rs1 in big billion day then it does not mean that i am bound to sell it at price lower than Rs1
he got a great deal, it was his luck and timing, and now ram are not as cheap as they used to be so he can price them according to current price.
its upto seller to price it, and its upto buyer to buy it or not
btw i will suggest seller to hide price and taxes from bill else users will comment like these