V+(으)ㄹ까 하다 can be used to express “thinking about (do)ing”, and is similar to V+(으)려고 하다, however the latter has a stronger interntion.
내일 쇼핑할까 해요
I’m thinking about shopping tomorrow
난 일본을 배울까 해요
I’m thinking about learning Japanese
카메라 살까 해요
I’m thinking about buying a camera