Hello. I'm trying to sell my quad core Power Mac on craigslist. I've had it posted for about 3 weeks at $450 and today I finally got my first serious offer. The problem is he says $350 is the best he can do. Would I be crazy to go through with the deal? The only mods are an additional 2 GB of RAM (2.5 total now) and a new 1 TB hard drive (in addition to original 250 GB one). Would eBay be a better route? Shipping seems like it would be a hassle considering I don't have a car. I appreciate any input.