A rig used for Ethereum Mining
Ethereum Mining is getting more popular and PC hardware prices are increasing and going out of stock. Low-end processors are increasing in price because miners use those processors in their build. In mining, the GPU is more effective than the CPU. That is why there is an overkill amount of GPUs in the picture of the rig above. There are PC parts on the market that miners don't use for their mining rigs such as a GTX 1050. You can use parts like that to build a Gaming PC without spending a ton of money. If we wait long enough, Ethereum will have a very low value and miners will start selling the parts from their mining rig. Be careful though because those parts could be in Bad condition because they've been running for months or even years 24/7 at 100% GPU usage.
NOTE: I'm not against Ethereum Mining. I am expressing some problems that many have noticed from Ethereum Mining.