Do you need backlinks to your outer tier link wheel pages/sites? Or are you talking about direct niche-specific in-content backlinks to your money sites?
There are quite a few other variations and pricing will vary accordingly.
If you're looking for low cost solutions that fit your situation, drop me a line at
[email protected] with your niches, target keywords, and target sites. Also, send me your main competitor so I can do some preliminary REVERSE ENGINEERING and see what we're up against.
Only mainstream please.