Hi, I have written some eBooks on learning guitar. I have a freebie, the main product, an OTO, a downsell of OTO, an OTO 2 and a downsell of OTO 2. I am just not sure if I am going into a profitable niche. It seems like the "make money online" niche seems to be the most profitable. And I am having a few doubts...I just don't want to spend all of that money on sales pages ect.. on something that won't work out. and my main product is only 14 pages long!