Normally wallets like that uses the 3 keys system where one of the key is stored offline but I'm not sure about exodus. I've read coinbase is the only wallet that has an insurance in case of hack so I don't think that even with backups you can restore your coins on exodus, but again I'm not 100% sure.

Regarding the sales question yes, you just have to give your public key = address and people can send you coins immediately.