You hit the rusty nail on the head;)

The best advice will come from your real estate agent. The "best" prices are brought about when homeowners do what their professional agents tell them to do. Enough people have tried to "do it" themselves without changing very much only to find that their house just sits, and sits. The same owners then went ahead and did what was asked of them by their agent and the home sold for the asking price...some event started bidding wars that got them more money in the end.

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Location and price are the 2 main factors, the rest are just eye candy.

plus repair and clean/clean out.