Need a surveillance system

My family wants a surveillance system because our neighbor got robbed recently and we've had 2 attempted robberies so far. I've been looking around for a surveillance system for around $500, but it seems almost impossible to find a decent one. I'm looking for a 4-5 camera system and I can only find them costing up to $1,000.

tl;dr I need a good 4-5 camera surveillance system for ~$500.

Just get a fucking sticker that says you have a surveillance system. Works just as well.