If you want copywriting chances are you want it underpinned and influenced by marketing principles, and if you want marketing you want good writing behind it.
How you say something is everything. You can spend a lot of money putting your messages out there (not that you need to) but this only means a lot of people should see them. If it isn’t resonating with the right people, it was wasted and they might not even have registered seeing it. Equally if you do get the messaging right, you don’t have to pay loads to shout about it, because people will spread the word for you.
You might find these resources helpful:
It’s all about your customers and potential customers, and what works for them. There isn’t, and never should be, one size that fits all.
My range of experience means I can use creative marketing and copywriting to find the best way to achieve your objectives.