Ask HN: Is it a good idea to sell my startup?

I have been running my startup for a while, no seed funding and still was able get around ~$500 (ish) monthly profits.

Yet I was thinking that if I could sell it I would have more money to start something new plus to help me with my college.

I would like an advice from someone with more experience, should I sell my startup and attempt to create something else or focus more on my product?

Url: http://skyul.com