How do I know if it's a good deal?

[Mohsin Hirani]

So a seller contacted me today and he wanted to sell his house in the forth worth area. Now I am not sure how to recognize a good deal. Where do I obtain comps and how to I go about calculating the numbers for my offer? My goal is to wholesale this property. (Note that the house is in almost perfect condition because the seller put some remolding work into the home; therefore would any other investor be interested in buying it?) Any advice would be great.