Im in my 2nd week of adsense. What you are making is much much more than me Have you had any past experience of setting up a site and driving traffic to it before? Its a very impressive result
It's all relative really. It's good if you're pleased with that amount/it's exceeded your expectations. Depends on niche, traffic, CTR and the actual purpose of the site too.
That is an amazing amount if you just started adding it. That means you built your website for a good time and then you added Adsense.