I am female. But I think I'm the only female I know who doesn't like diamonds. I just don't get the point of a clear shiny gem when there are so many pretty colored ones. I also don't like yellow gold.
So based on that pure honesty. I think this set isn't bad at all. The set would go together nice, but I've seen some sets that fit together really well. Maybe I'll look in a couple minutes, as I'm having a hard time sleeping, but I think you should go with your gut, if it looks cheap, it probably is. Also have you checked out any local jewelry stores? I know some are expensive, and they will probably point you out of your budget range, but you might find a style or something you really like, you might learn a few keywords that will help you on your search.
I was at a mall with my roommate and I saw this lovely butterfly necklace at a jewelry showroom. I really liked it, and he remembered it, and found one almost the same exact thing on Amazon because he went and looked it up on their website later and found a cheaper version on Amazon, so it worked in my experience.