Can I deduct goods purchased on eBay classifieds? Is VAT deductible on purchases?

Hello, I have two cases and I have questions: Case 1: I want to sell my used music system, which I bought new last year for €1,800, on eBay classifieds. "For depreciation purposes, fixed assets like speakers are stated as having a useful life of seven years." A: What happens to this depreciation? How do…