I drove for a pizza place several years ago. $3-5 is normal these days, some more if there is a huge order.
-I fucking hated swimming pools, never tip-but that was mostly kids.
-Normal middle class neighbors tended to tip more than upscale neighborhoods. For example, Daventry (off of Old Keene Mill) sucked compared to the older homes closer to west springfield. Daventry was full of cheap ass rude assholes for the most part.
-Section 8 shit holes like green hills
http://www.yelp.com/map/greene-hills-estate-springfield. I remember seeing giant ass big screen televisions and fairly nice cars in their cockroach houses. Would not tip for shit either. I can understand just being down on your luck, but these bastards had some nice shit for their dump of a house.
For the most part, people were pretty cool though.