Siu,

That's a decent bike, and in a hot bike market such as where you live will bring at least $200 on CL if you were to sell it. If it fits you and you like riding it, it is definitely worth spending money on.

I live in the same general area as you, so if you need to put it on a stand and do some work drop me a PM. I've got most every tool necessary to wrench on that bike, and can show you how to change cables and stuff if you like.