About how much is the cost of a song copyright transfer?

Question

for example, say I write a song, and then need money and decide to sell the lyrics and copyright, how much do you think it would be worth?

Answer 1

anywhere from zero to a million $US. Copyright is not an "all or nothing" proposition. You can keep the rights and just license limited use to a publisher in return for royalties. You should really join a song composer organization, such as ASCAP, BMI, or SESAC. They will monitor the use of your compositions and collect performance royalties. They can provides lots of help as commercial exploitation of music is their central business.