Are the costs the same for an uploaded audience list?
I target specific users by uploading a list to Facebook containing various data about the individuals, hoping that Facebook will find the correct Facebook pages. Are the ad rates the same when I do this vs. other selection criteria?
Yes the way you are charged will be the same whether you are advertising to a custom audience or not.
Your cost per click may differ depending on how relevant your ad is to your target audience. The more users who relate to your ad and therefore click on it, the lower your cost per click will be.
Hope this helps!