Well before we blame the previous owner, black is a very hard finish and color to maintain. The slightest chip will stick out. To be honest, rock chips are a common occurrence where I live. I usually stock up on factory touch up paint. The only fault I can see for the previous owner is not repairing them.
I say get an estimate and have it repaired (especially on a GT500). After you fix them invest an extra 100 bucks on THIS