Back Links Required -- Trial Project!

Trial Project!! Can you please advise how many back links you can build for 30USD (Escrow GAF)? Important: We will check the backs link via link:[login to view URL] via google, for example by checking link:[login to view URL] via google and you will see there are 20 back links in total. Only indexed in google and can be checked by link:[login to view URL] via google can be counted. Long term relationship if you done well.