Another common complaint amongst marketers is they don't want to write sales letters themselves but don't want to pay thousands of dollars to get someone to do it for them.
What I've come to realize is people don't want master pieces from you when writing a sales letter, they just want something they can work with. A complete sales letter for under $100 they can then tinker with themselves if need be.
Let's say you take on 2 sales letter clients a day at $97 a pop. That's nearly $1500 a week, which isn't bad money in anyone’s language.
Of course you would have to have some knowledge in copywriting. If you are serious about this, I suggest finding all the copywriting books you can and read
everything you can on copywriting, and practice!