Hello, I wanted to buy an iPhone 14 and I saw that on eBay it goes for around 760 euros (about 100 euros less than other sites), are they scams or do you think that's normal?

You also need to check the seller's country of registration (not where the item is located!)... if it's Chinese, beyond the 30 days of eBay buyer protection, you won't have any other warranty... the 24-month one does not apply to sellers outside the EU.Kind regards.