graphics card prices aren't going to drop below what the typical gamer market price is..
billion dollar chip fabs didnt run production lines basing demand for their products on a couple thousand bitcoin miners.
so u can drop the fantasy that cards are going to go for 'half price'.
all bitcoin mining did was increase demand for a market that already had a large existing demand to begin with.. when it disappears the world doesnt explode and amd doesnt shut down their factories..
the total number of 5830's in existence today is the same as it was before, and the total number of gamers buying them today is the same as it was before.
Whether newegg is selling them or some guy on ebay, it doesnt matter.. the supply is the same and the demand is the same.. people far more informed with the market data figured out those performance/price points long ago