What fees are associated with using .locker?

What is a primary name?

Can I sell or transfer my .locker domain name and digital identity to someone else?

I have a BNS .locker digital identity. Can I use it on ENS?

What is the ENS resolver?

Can I only use my .locker digital identity on Ethereum?

Can people send me crypto using my .locker digital identity?

Which type of digital identity do I have?