You can shoot landscapes with just about any lens.
If you want to shoot with a telephoto, that's up to you. If you want to shoot with a wide angle, that's up to you. What lens(s) do you have now...and what do you think you would want more...something wider or something longer?
And what is 'affordable' to you...may not be affordable to someone else. So if you want a recommendation, you'll have to be more specific.