backlinks for my site

i need someone to make offpage only for my site

I will send to you list have 500 sites to make an backlinks campaign

I will pay for 500 backlinks = 20$

if agree ---- bid ----if not ---please don't bid

please note :::::

that i will send to you list off back links but you will check it abut spam score i don't need site with spam score above 1%