What is the top laptop on the market under $300 that will give me a great performance for the price?

There's rarely any that will give a "great performance" at that price. I mean there ARE laptops, but they will only allow you to do so much. Just go to Amazon or something and look up laptops then filter it. I mean there's not much of a difference when your price range is that low.

I'm a Bangladeshi. Your answer is good. I hope that for you work DELL 4050 model is enough. Because I use Dell laptop. So I hope that it is best. This model laptop price 250$ - 300$ enough price.