If you don't care about recording video or video recognition features, the cheapo chinese cams on amazon actually perform pretty well. For $80 you can get 720p video with IR lights, speakers, microphone & it can move around. Usually it doesn't zoom like a dropcam can.
If you willing configure a NAS server somewhere, you can even record the video locally.
If you willing configure a NAS server somewhere, you can even record the video locally.