That's what I do. I'll give you a general standard of my peers. Usually, I make a DEMO, that is, the arrangement of demo varies from a few hundred to two thousand, and there are differences in different styles, such as HIP HOP, which is simple and cheap. Slow songs are medium-grade electronic dance music and jazz rock with Chinese style, which is a little more complicated and expensive.
The quality of online songs is almost 1000~3000.
Record publishing level is generally 3000+ with no upper limit, buyout and follow-up income.