I stopped by a thrift store and found a PowerMac G4 for $25. The case looks to be in good condition but dirty. Inside the HDD is unplugged and there's no memory. There also looks like the metal part that goes against the heat sink when closed is bent a bit. Thoughts? I've been wanting one for a long time but gave up when I had to buy a new car. I was seeing a lot for about $100 but in good shape.