That is so important and I feel like that's why you need to look for a marketplace that is secure. I really like HBUS, I'm currently using Coinbase and am looking to switch. HBUS is registered with FinCen so that in itself is a good sign to me and they're also offering prizes if you register for them so why not?! Highly recommend you check out their website tho and see for yourself its just hbus.com!