Not knowing what price you paid previously, makes it difficult to answer your question but not impossible. If you just purchased your current machine then I would have to say it might be difficult to get a better price on a new one. However, if it's been a few years since your last purchase, im sure they offer a machine of the same specifications or better for what you paid for the last machine or even less.
You get what you pay for, and ussually the less you pay for a laptop the less you get. I personally dont recommend desktops under 500 or laptops under 600 unless they are purely for web browsing, word processing, and social media. Many of these value laptops do not last more than a year or two. Save up and get one for at least 650.
I honestly dont know but you can go to best buy and ask
You probably can Exchange it for something else but maybe cheaper it depends
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