The crypto market is continuing to fall, which has led a ton of miners to exit the market or to downscale their operations, thus finding themselves in possession of valuable computer components that they now no longer need.
Some such miners, many from China and South Asia (where electricity is cheaper), are now taking that hardware and dumping it on e-commerce websites. As a result, GPUs that usually go for $500 to $600 are selling for around half that price on the secondhand market.