I have two blogspots about electronics. Each site has about 900 quality backlinks. The price of blog posts: You pay me 3$ + provide me with the text and I provide you with relevant do-follow backlink. In addition, I will submit the page to social bookmarking sites so you will get the link not from empty inner page but from inner page with more than 120 backlinks and that is very good for the quality of the backlink you get. PM me for details and urls of my sites.