Should I buy a monitor at this budget?

Usually no, unless you already have the desk and chair handled and know a second screen will solve a real issue.

Can I use a dining table instead of a desk?

Yes, if it is stable and the height works for you. Good enough to start beats waiting for the perfect desk.

Guide preview

Build a starter desk setup under $250 with the essentials that improve comfort, lighting, and focus without wasting money on desk accessories.