yes google ban your site but you need to hide your url when u sell link try to send in PM.you try to need increase site traffic then you can sell link in high cost
I think it would depend on traffic a site with only a couple hundred UV a day is not worth a whole lot.
Wow, I wish I had 100 P4 sites! Definitely could get by selling links on them. If you have them give me a buzz and let me know how much. GD