Buying a laptop that runs minecraft well?

I have been wanting to play minecraft for a long time and have been saving some money. I have looked in Amazon and Ebay and I don't know anything about laptops so i don't know which one to get. I'm looking for a used laptop. My maximum i'm willing to spend is $175. Can someone help me out and tell me which laptop in ebay and amazon is best.

I like Acer.

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what are the best computers for minecraft
what computers load minecraft fast