Guitar Fender Stratocaster

So what price would be good? I sold a few and saw other similar guitars for that price so if i increase the price maybe it will not be profitable.

Well, it looks like a high-quality model that you spent a lot of time on. However, if you're happy with the profit you are getting from the sales, then do not change the price. In general, people tend to think lower prices will translate to more sales volume. It usually does not work out that way. Speaking only from personal experience, I've raised prices on certain models and the only difference I noticed was an increase in profits. However, I cannot speak for everyone. Different categories may require different strategies. Glad you're doing well with it. Keep it up.