I always shudder a little bit whenever I see "cheap" in the title of a thread. This is not an inexpensive hobby and cheap usually results in cheap results. That's not to say to search for the best bang for the buck at all. But let's be honest, when you're asking about lenses and wanting the quality that everyone wants and dreams of those wonderful images, then you should figure in terms of multiple hundreds, and into the four digits.
If you want a WA and already have a lens that is at 18mm and you "don't got no job", then you should really consider your priorities. Wait until the time is right, when you have been able to save up for that lens that will give the results you envision...... not one that will do. Your 18-55mm can produce some really nice images. Learn how to work it.
*steps off soap box*