Sean, I use them on a routine basis for house rental ads. I've found them to be nice enough and reasonable to deal with. Let me know if you have any specific questions.
Where in Kent County do you live? I forget the percentage, (30 or 35% I think?) but the paper you place your ad in must circulate through that percentage of your zip code! SO, just make sure that the Dover Post is one of those news papers. I had a list of which newspapers satisfied which zip codes at one time. I'll see if I can find it and post it here.
Good luck!
Moosie