When selling on eBay, the fees tend to be a hassle and with so many competitive prices, you usually don't make much money but as a buyer, it's the best! You just need to know how to actually use it. If an item (for example jewelry) is way too cheap for the type of gem its claiming, its probably a scam and this is true for anywhere. Always make sure you look at the person you are buying from. Check their rating percentage and their reviews as sellers. Shipping is fast if I buy from my country or its slow but very, very cheap
I've been using eBay for years and have only had 1, bad experience which was my first purchase. It only happened because I didn't know how to use it and didn't check the seller. I reported to eBay and got my money back very quickly. Love this site