What kind of hardware are you looking for for that budget? For 100 USD + windows license you might find a low-end dual core server.
Wouldn't a VPS be more interesting to start with and upgrade it to a dedicated when there's more budget?
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You will not get a good specification Windows based dedicated server for $100. What is the minimum system requirement to run the game? How many people would be playing the game? Share your requirement in detail, we would be able to suggest you in a better way.
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