Looking for lox, not smoked salmon

Hi all,

As the title suggests, I am looking for lox (Brined - not smoked). Everywhere in the internet I can only find smoked salmon or bagle and lox sandwich.
I am looking for enough amount for three people, we are having a brunch.
Can someone help?

Edit: This was probably the first time I comment on Reddit and I am really thankful for everyone who took the time to reply. All your answers were insightful, I will try to do gravlax myself at home!