i choose webpage price in very simple method. one month income x 3. for example: if my page one month income is 50$, than 50*3=150$.
search another site which is selling. choose best price and sell. please show you webpage address to PM. i say how much it worth.
I'm not sure, I will need more informations about your site. Maybe you can check on Flippa for similar sites to yours.
It depends on how much income the site generates. It is usually 12-15 x the income received each month.
Website appraisal is not based upon how many visitors the site receives, although, it is a factor. More importantly is how much revenue the website brings in, how old it is, what the PR of the website is, and the ever so common Domain Authority.