Joe donates a one$-$year$-$old Mac portable computer to his church. He paid $$1,500$ for it new, but he knows it's worth much less than that because of its age. He looks at sales of comparable computer on eBay and finds that the average price they are going for is $$500.$ He decldes this is its fair market value for tax purposes. Joe can claim a deduction for charitable contributions for what amount?