I bought a Brother computerized that was under $300 for use at my daughter's home in America when I am visiting.
Warning! - I just read on another topic that different machines can produce very different results... regarding seam allowances. They recommend that whatever machine you begin a project on, you finish it on. There was a picture of 2 strips that were quite different in size because one machine was 1 or 2 threads different. Interestingly enough, the machine that sewed the most accurately was an old model Singer.
Just a thought.